What was the outcome of SALT II negotiations influenced by the USSR's actions in Afghanistan?

The outcome of the SALT II negotiations was ultimately influenced by the geopolitical context, including the USSR's invasion of Afghanistan in 1979. This action heightened tensions during the Cold War and led to skepticism and distrust between the United States and the Soviet Union. As a result, despite the formal signing of the treaty in 1979 by both superpowers, it failed to secure approval from the U.S. Senate. The invasion fundamentally shifted U.S. public and political opinion against the USSR, complicating efforts for arms control and contributing to the treaty's downfall. Consequently, SALT II did not receive ratification, illustrating how significant international actions can impact diplomatic agreements.