U.S. sends Russia letter on security demands: 'The ball is in their court'

The United States sent a letter to Russia addressing the country's security demands, but did not make any concessions, Secretary of State Antony Blinken said Wednesday. The missive is "a serious diplomatic path forward," Blinken said, and is the latest attempt to cool tensions between Russia and Ukraine. The letter's contents won't be made public, Blinken added, but he did say it mentions Russia's demand that Ukraine be barred from joining NATO. "NATO's door is open, remains open, and that is ou...