Report: Russia May Exit 1987 Arms Treaty

On the grounds that they were the Soviet Union, not Russia, when they signed the treaty. This is not without precedent, of course.

The US's actions (specifically around pursuing a "Star Wars" program, and especially around putting components of that program in central Europe, but also more generally) are pushing Russia, China, and India closer together (also check out the comments on that article to see how your fellow americans are representing you).