Need answer right away. how did the nations of south and southeast asia respond to the u. s. and u. s.s. r. policies of expanding the cold war? the south and southeast asian nations accepted the u. s. policy but rejected the u. s.s. r. policy of expanding the cold war. the south and southeast asian nations rejected both the u. s. and u. s.s. r. policies of expanding the cold war. the south and southeast asian nations rejected the u. s. policy but accepted the u. s.s. r. policy of expanding the cold war. the south and southeast asian nations accepted both the u. s. and the u. s.s. r. policies of expanding the cold war.