|The S.A.L.T. II Accord was reached in June of 1979. The Accord allowed both nations to build up to 2,250 missiles, of which 1,320 could have MIRV (Multiple Independent Re-entry Vehicle) warheads. These were able to carry many warheads. The agreement was received with disdain by critics of the Soviets, who believed that the accord granted the Soviets the advantage. The S.A.L.T. II agreement was never ratified, as the subsequent Soviet invasion of Afghanistan eliminated any support for the treaty. Its terms, however, continued to be observed by both sides.