The Customs Union of Belarus, Kazakhstan and Russia is a form of trade and economic integration that provides for a single customs territory, unified customs regulations and other measures to regulate trade with third countries.
The supreme body of the Customs Union is the interstate councils (ISC) made of heads of state and heads of government.
ISC decisions are adopted by consensus.
The Customs Union Commission (CUC) is an integrated permanent regulatory body of the Customs Union comprising three vice premiers (Sergei Rumas of Belarus, Umirzak Shukeyev of Kazakhstan, and Igor Shuvalov of Russia). The CUC must:
execute resolutions passed by the supreme body of the Customs Union;
monitor the fulfillment of international treaties on forming the Customs Union;
work out recommendations on Customs Union formation and operation for the supreme body of the Customs Union.
The Commission acts within its power to pass resolutions binding upon the parties.
Votes in the Commission are distributed the following way:
Belarus – 21.5;
Kazakhstan – 21.5
Russia – 57.
Decisions are passed by the majority of two thirds of the vote*.
If a party disagrees with a resolution of the Commission, the matter is forwarded for consideration of the Customs Union’s supreme body at the level of heads of state that will pass a consensus decision.
* The Commission also makes decisions by consensus if the option is stipulated by international treaties that make up the legal base of the Customs Union.
Source: the website of the Customs Union Commission