Nuclear briefcase

A nuclear briefcase is a specially outfitted briefcase used to authorize the use of nuclear weapons and is usually kept near the leader of a nuclear weapons state at all times.

France

In France, the nuclear briefcase does not officially exist. A black briefcase called the "mobile base" follows the president in all his trips, but it is not specifically devoted to nuclear force.

India

India does not have a nuclear briefcase. In India, the Political Council of the Nuclear Command Authority must collectively authorize the use of nuclear weapons. The NCA Executive Council gives its opinion to the Political Council, which authorises a nuclear attack when deemed necessary. While the Executive Council is chaired by the National Security Advisor, the Political Council is chaired by the Prime Minister. This mechanism was implemented to ensure that Indian nuclear weapons remain firmly in civilian control and that there exists a sophisticated command-and-control mechanism to prevent their accidental or unauthorised use.
The Prime Minister is often accompanied by Special Protection Group personnel carrying a black briefcase. It contains foldable Kevlar protection armor, essential documents and has a pocket that can hold a pistol.

Russia

Russia's "nuclear briefcase" is code-named Cheget. It "supports communication between senior government officials while they are making the decision whether to use nuclear weapons, and in its own turn is plugged into the special Kazbek communication system, which includes all the individuals and agencies involved in command and control of the Strategic Nuclear Forces." It is usually assumed, although not known with certainty, that the nuclear briefcases are also issued to the Minister of Defence and the Chief of the General Staff.