Balkan Route
The Balkan Route is a set of trafficking corridors used primarily for moving opiates from the Golden Crescent to European consumer markets. It is commonly described as the most direct overland route from Afghanistan via Iran and Türkiye, and then onward through countries of the Balkan Peninsula into the European Union.
The term is used in law enforcement and policy reporting to describe not a single fixed itinerary, but a dynamic network of paths that adapt to border enforcement, geopolitical conflicts, and logistical opportunities. While historically dominant for heroin, the route has evolved into a multi-commodity corridor, facilitating the movement of cocaine, methamphetamine, and illicit precursor chemicals such as acetic anhydride.
Beyond illicit commodities, the Balkan Route is a critical corridor for irregular migration and human smuggling into the European Union. It gained global prominence during the 2015 European migrant crisis, serving as the primary entry point for hundreds of thousands of asylum seekers and refugees traversing from Turkey and Greece toward Western Europe. Although coordinated border closures in 2016 formally shut down the humanitarian corridor, the route remains active for migrant smuggling networks, which often exploit the same physical infrastructure, border vulnerabilities, and corrupt officials used for narcotics trafficking.
History
The historical origin of the Balkan Route and its cultural history dates back to the Neolithic era. At that time, the first farmers reached Transdanubia and the northern Balkans via the central Balkan region as part of the migration originating from the Near East. This marked the beginning of the Neolithic Revolution in Europe, characterized by the transition from hunting and gathering to agriculture.The Danube Road ran from present-day Belgrade to the Danube's mouth at the Black Sea, stretching along the edge of the Balkans and connecting the observation posts and fortifications of the lower Danubian Limes. The Via Pontica was the connecting road from the Danube Delta to the Bosphorus along the Black Sea coast. The Via Egnatia was built in the 1st century BC as an extension of the Via Appia across the Strait of Otranto, serving as the fastest connection from Rome to the Bosphorus. The Via Militaris was built in the 1st century AD; due to its route through the Balkan valleys, it had relatively moderate gradients. This made it a significant strategic route, allowing for extensive troop movements—even with heavy Roman war chariots—between the northern, southeastern European, and Near Eastern provinces of the Roman Empire in any weather.
Since late antiquity, the Balkan route via Constantinople had become an important connection to the Silk Road, and the Republic of Venice conducted a considerable portion of its trade along this corridor.
The Balkan route has long been one of the most important trade and military roads in Europe. It was central to the Crusades, the Venetians, Constantinople, and the Habsburg Monarchy.
Development in the Modern Era
At the Congress of Berlin in 1878, which ended the Great Balkan Crisis, it was decided to develop the Balkans by building a railway connection to Istanbul. Within the Ottoman sphere of influence, the railway was built by the Chemins de fer Orientaux under Baron Maurice de Hirsch. In 1888, with the closing of the final gap in Bulgaria, the continuous connection between Vienna and Istanbul was inaugurated. It became famous primarily through the luxurious Orient Express which operated on the line between Paris and Istanbul.During World War II, European refugees used the Balkan route to reach Turkey, and from there, some continued to Middle East Relief and Refugee Administration camps in the Middle East. Escape and immigration routes for Jews organized by Betar, Hechaluz, Mossad LeAliyah Bet, and private organizers into Mandatory Palestine led—within the framework of Aliyah Bet—down the Danube and then across the Black Sea and the Bosphorus. After the Anschluss of Austria in 1938, Adolf Eichmann brought emigration to Palestine from the entire Reich territory under his control via the Central Agency for Jewish Emigration in Vienna. To combat illegal immigration to Palestine, the British government pressured Romania, Bulgaria, Greece, Yugoslavia, and Hungary to dismantle local Aliyah Bet organizations.
The Yugoslav Wars and the subsequent collapse of state institutions in the 1990s led to the "institutionalization" of the drug trade. As formal trade routes were disrupted, organized crime syndicates—particularly from Albania, Serbia, and Bulgaria—developed sophisticated underground networks that leveraged the chaos of the conflict. During this period, the Balkan route evolved into a "multi-commodity" corridor; while heroin remained the staple, the infrastructure began to be used for the trafficking of human beings, illegal weapons, and cigarette smuggling.
In the 1960s, the term Gastarbeiterroute emerged for the route across the Balkans used by migrant workers. Concurrently, the route became the world's primary corridor for illicit heroin trafficking, linking opium production in the Golden Crescent to Western European markets via Turkey. By the early 1970s, it had largely superseded the French Connection, with the United Nations Office on Drugs and Crime identifying it as the busiest drug trafficking land route in the world.
In the 1990s, the expansion of the Balkan route began to better connect Eastern European countries to the global division of labor. Due to the breakup of Yugoslavia and the accompanying Yugoslav Wars, the traditional route section via the Brotherhood and Unity Highway was avoided.
Within the framework of the Trans-European Networks concept, work is being done on ten Pan-European corridors to expand transport infrastructure in Eastern and Southeastern Europe. In this context, Corridors IV, VII, VIII, and X on the Balkan transit routes are being upgraded to improve water, rail, and road infrastructure.
China is investing in the expansion of the Budapest–Belgrade–Skopje–Athens railway to Central Europe as part of the Belt and Road Initiative.
Illicit drug trafficking use of the "Balkan route" (late 20th century–present)
In law-enforcement and drug-market analysis, the term Balkan route is also used for a set of trafficking corridors that have historically been a principal pathway for moving heroin from Afghanistan into European consumer markets via Balkan states, rather than a single fixed itinerary.EUDA describes the Balkan route as the "shortest and most direct route" to European consumer markets, noting that heroin on this route usually enters the EU at land border crossing points in Bulgaria or Greece. EUDA further distinguishes three branches from Türkiye: a southern branch, a central branch, and a northern branch.
EUDA also notes that this corridor has been associated with "reverse" trafficking flows of heroin-processing precursor chemicals from Europe in the opposite direction along the same corridor. In addition, EUDA reports a possible shift in some trafficking methods toward maritime transport from Turkish ports to EU ports in the Adriatic and Mediterranean, citing large seizures linked to this modus operandi.
UNODC has published economic analyses of opiate trafficking on the Balkan route, including its assessment of the illicit proceeds generated by Afghan opiates trafficked to European markets via this corridor.
In the 2020s, Balkan-based organised crime networks have also been implicated in large-scale cocaine trafficking into Europe, in addition to the region's long association with heroin transit. Eurojust reported that an Albanian-led network trafficked large quantities of cocaine from South America to Italian seaports concealed in container shipments, and that a coordinated operation resulted in arrests and multi-tonne seizures.
Migration movements of the 2010s
By the early 2010s, the Balkan route underwent a significant diversification. While it remained the conduit for roughly 80% of Europe's heroin, it also became a major entry point for cocaine from South America, arriving via maritime ports in Albania, Montenegro, and Croatia before being transported north. Law enforcement agencies, including Europol, noted a "convergence" of illicit flows; the same criminal networks managing these drug shipments often controlled the logistics for the massive increase in people smuggling during the 2015 migration crisis, utilizing identical safe houses, forged documents, and clandestine border crossings.Many of the migrants in the European refugee crisis who take a Balkan route come from Syria, Iraq, and the wider southern Central Asia region, particularly Afghanistan and Pakistan. However—after the Mediterranean routes became more difficult or expensive—migrants also arrived from North African countries, Eritrea, and Ethiopia. These migrants generally do not wish to settle in the economically weaker Balkan countries but strive for residency in Central Europe, the British Isles, or Northern Europe.
Additionally, for a time, the relatively underdeveloped Balkan countries of North Macedonia, Albania, Montenegro, and Kosovo were themselves countries of origin.
At the beginning of the refugee crisis in 2011, the Eastern Balkan route was the main route. For 2012 and 2013, Frontex recorded 12,000 passages on the Eastern Balkan route and 4,000 on the Western Balkan route—an enormous increase compared to previous years, but far fewer than in 2015. The situation was perceived as so critical that the first Western Balkans Conference took place in November 2013. Following the construction of the Greek border fence with Turkey in 2012, the Bulgarian fence with Turkey was built in 2014; this effectively closed the Eastern Balkan route. Migration shifted from land borders in Turkey to routes via the coastal Greek Aegean islands. This shift was in the interest of Bulgaria and Romania as well as Turkey, which would not have tolerated mass movements across the Bosphorus. In European Frontex jargon, this route is called the Eastern Mediterranean route.
Some of the islands of Greece lie within sight of the Turkish coast; refugees can reach them on simple boats. Winds, ocean currents, and swells can be dangerous; boats sometimes capsize, and people drown. In 2015, Greece allowed refugees to travel on to the mainland; from there, most moved to one of the border crossings on the Greece–North Macedonia border and some to the Albania–Greece border. Following the Syrian civil war and persistent droughts, but also due to a lack of funds at the UNHCR, humanitarian conditions in refugee camps in Lebanon, Jordan, and Turkey became partly catastrophic by early summer 2015, setting the Levant in motion. During the hot summer of 2015, hiking conditions in Europe were also favorable.
In 2015, Greece did not register migrants on the Greek islands or upon their transport to the mainland, thereby violating the Schengen Agreement. At the Greece–North Macedonia border, many migrants tried to enter North Macedonia. North Macedonia and Serbia are not EU members; the EU external border therefore lay at Hungary and Croatia. Until Hungary built the border fence with Serbia and closed its borders to refugees in late September 2015, many refugees traveled via Hungary and Austria.
This route became publicly known only at the end of August 2015, when refugees "stuck" in Hungary were allowed to travel to Germany. At the end of August, due to ambiguous statements by the Federal Office for Migration and Refugees and Chancellor Angela Merkel, the opinion or hope spread among migrants that Germany would in the future grant Syrian refugees asylum in principle, without examination and without regard for the Schengen/Dublin procedure. The situation intensified again instead of subsiding with the end of summer as hoped. The destination country for the majority of migrants was Germany; Sweden, previously a frequent destination, radically changed its refugee policy during the autumn of 2015. In transit countries, refugees often traveled by buses, taxis, or trains; state borders were crossed on foot.
A flight via the Balkan route used to take weeks; when some transit countries transported refugees to the next border, it went much faster.
In early February 2017, a spokesperson for the Federal Ministry of the Interior stated that while illegal migration via the Western Balkans had been significantly reduced, it was continuing. In 2018, about 41,000 people used the Balkan route, and in 2019 about 82,000 people.
In July 2019, the Balkan route received greater media attention again due to reports of inhumane conditions at the Vučjak refugee camp near the Bosnian town of Bihać.
Anti-migration measures in the 2010s
In 2015, border fences were built at the Austrian Spielfeld border crossing, from Slovenia to Croatia, and at the Greece–North Macedonia border.On November 19, 2015, it was announced that Serbia and North Macedonia would only allow refugees from Syria, Iraq, and Afghanistan to enter, as would the EU country Slovenia.
Two days earlier, officials from the interior ministries of Slovenia, Serbia, North Macedonia, and Greece had agreed in Brdo pri Kranju on measures to slow down, manage, and control the flow of migrants, as well as on a unified system for identifying those passing through and a shared database. North Macedonia began building a border fence on its border with Greece. On February 8, 2016, construction began on a second border fence.
The eastern EU countries of the Czech Republic, Poland, Hungary, and Slovakia decided on February 15, 2016, to also seal off the Balkan route more strongly against refugees. They pledged practical support for border security to North Macedonia and Bulgaria.
In January 2016, Austria introduced an upper limit for asylum applications as a guideline, designating an 80-person quota for Spielfeld on February 22 for this purpose, and a daily quota of 3,200 refugees for transit to Germany. On February 26, 2016, Slovenia announced it would only let 580 refugees into the country daily. This was intended to enable the control of every refugee according to Schengen/Dublin rules again.
This resulted in a "backlog" in Greece. Austrian interior minister Mikl-Leitner spoke of a "desired chain reaction of reason."
Deputy Minister of the Interior Ioannis Mouzalas, responsible for migration issues in the Second Tsipras Cabinet, said on February 28, 2016, that "22,000 refugees and migrants" were in Greece. At the Idomeni border crossing, 6,500 of them were hoping for entry into North Macedonia.
Greece restricted refugee transport from Greek islands to the mainland to slow down this part of the migrant flow.
Shortly after the conference, tear gas was used in North Macedonia against the accumulating migrants who did not fall under the new stricter passage profile and who began to tear down the border fence.
In early March 2016, through coordinated decisions by North Macedonia, Serbia, Croatia, Hungary, and Slovenia, the Western Balkan route was completely closed to refugees: These countries intend to only admit persons with valid passports and visas. The Austrian Interior Minister also declared that the time of Austria functioning as a "waiting room" for other countries was over. und Außenminister Kurz betonten, dies solle dauerhaft so bleiben.
A readmission agreement has been in force between Greece and Turkey since April 2002, based on which Greece could send illegally entered persons back to Turkey.
On December 16, 2013, the EU and Turkey concluded a readmission agreement; it entered into force on October 1, 2014.
However, Turkey has so far refused to take back refugees and implement the existing agreement. Of almost 9,700 readmission requests from Greece in 2014, Turkey fulfilled, for example, six.
As of February 22, 2016, Turkey disputed a point in agreements between the EU, NATO, and Turkey, according to which boat refugees rescued from distress at sea by NATO ships should be returned to Turkey.
In September 2016, a meeting of heads of government and ministers from ten countries, as well as EU Council President Donald Tusk and EU Migration Commissioner Dimitris Avramopoulos, took place in Vienna to discuss the migration issue. It was revealed that since February, 50,000 asylum seekers had illegally reached Germany via the Balkan route.
From March to September 2016, about 18,000 refugees arrived in Austria. In Bulgaria, according to authorities, around 15,000 migrants entered the country from January to early October 2016.
The Bulgarian Interior Ministry reported in August 2017 that 1,461 illegally entered refugees had been apprehended since the beginning of the year, 80 percent fewer than in the same period of the previous year. The number of recognized and tolerated refugees also dropped drastically. This is considered a consequence of the massive expansion of the border fence with Turkey, which the Second Borisov Government additionally pushed forward, as well as the support of the Bulgarian border police by Frontex and Turkish colleagues.
Romanian media reported in the summer of 2017 that the number of refugees apprehended in the country had tripled compared to 2016. Some of them arrive by boat from Turkey across the Black Sea to Romania.
One of the masterminds of the EU-Turkey deal of March 18, 2016, Gerald Knaus, said in March 2018 that the closure of the Balkan route was "an illusion." The arrival numbers of refugees on the Greek islands in the two years following the conclusion of the agreement corresponded roughly to the number of migrants who entered Germany from Greece via the Balkan route in the same period.
Migration movements of the 2020s
In April 2021, according to the non-governmental organization Save the Children, the route had shifted to Romania, causing the country difficulties in supporting children in transit. The more direct route via Hungary or Croatia to Western Europe had lost popularity following reports of pushbacks at the borders, and the numbers in Romania increased by 134 percent within a year according to activists' estimates.During the Russian invasion of Ukraine in 2022, in addition to the refugee flows from Ukraine, there was also an increase in the migration flow from the Near and Middle East via the Balkan route to Western Europe. Serbia played a key position as a transit country, and there were suspicions that Serbia's traditional ally, Russia, might be behind it.
In mid-2023, "more than half of the migrants and refugees registered in Austria to the EU via Bulgaria;" 95% of migrants and refugees came to Austria via Hungary according to Ö1-Mittagsjournal, and immigration pressure remained very high. "The main route of the smuggling organizations currently operating in Eastern Europe towards Central Europe still runs via Hungary and Serbia." From January to November 2023, 92 migrants died on the route, significantly more than in previous years.
Main branches
European monitoring sources describe three major branches departing from Türkiye:Southern branch: Overland through Greece and Albania, often utilizing maritime connections across the Adriatic Sea to Italy.Central branch: Overland through Bulgaria, North Macedonia, Serbia, Bosnia and Herzegovina, Croatia, and Slovenia towards Italy or Austria.Northern branch: Overland from Bulgaria to Romania and Hungary, then onward to consumer markets in Central and Western Europe.Criminal infrastructure
The route is managed by a loose network of criminal groups rather than a single hierarchical cartel. However, the term "Balkan Cartel" is sometimes used by law enforcement, particularly Europol, to refer to the conglomeration of gangs from the Western Balkans that coordinate large-scale shipments.These groups are known for their adaptability and violence. Notable conflicts, such as the war between the Kavač clan and Škaljari clan, have resulted in violence spilling over into other European countries. These networks often operate "cells" in major distribution hubs like Frankfurt, Vienna, and Rotterdam.