联合国大会377号决议，即所谓“联合一致共策和平”决议，是1950年美国在联合国提出的一项决议。决议的内容是，在联合国安理会成员国无法达成一致的情况下，可以由联合国大会授权采取行动维持国际和平。不同于由安理会通过的行动，联合国大会所通过的行动更多地具有象征意义而不是实际力量。由于任何措施均由安理会负责最后实施，反对者可以在安理会设法阻止维和部队的派遣。美国之所以引入这项决议主要是想绕开苏联的否决权。

United Nations General Assembly (UNGA) resolution 377 A, the "Uniting for Peace" resolution, states that in any cases where the Security Council, because of a lack of unanimity amongst its five permanent members, fails to act as required to maintain international peace and security, the General Assembly shall consider the matter immediately and may issue any recommendations it deems necessary in order to restore international peace and security. If not in session at the time the General Assembly may meet using the mechanism of the emergency special session.