Recent incursions into U.S. air defense zones by Russian nuclear bombers earlier this month were part of exercises that violated provisions of the 2010 New START treaty, according to U.S. officials.
The treaty requires Russia and the United States to provide 14-day advance notification of major strategic exercises involving nuclear bombers covered by the treaty, and to provide notice within 48 hours after the exercises end.
State Department and Pentagon officials said the Russians failed to provide the proper notification for large-scale exercises held in late June in the arctic.
During the exercises, two Tu-95MS Bear H bombers armed with cruise missiles flew into the 200-mile air defense zone near Alaska, prompting U.S. F-15 and Canadian CF-18 jets to intercept the bombers.
The exercises began June 18th, the same day President Obama met Russian President Vladimir Putin in Mexico at what was described as a politically tense meeting.
Full article: False START: Russian failure to notify U.S. of bomber exercises violated New START arms treaty (Washington Free Beacon)