Name the leader of the Soviet Union who proposed Asian Collective Security System.

Leonid Brezhnev

The correct answer is Option (2) → Leonid Brezhnev

Leonid Brezhnev (1906-82): Leader of the Soviet Union (1964- 82); proposed Asian Collective Security system; associated with the détente phase in relations with the US; involved in suppressing a popular rebellion in Czechoslovakia and in invading Afghanistan.