U.S. says Russia violated missile treaty [VIDEO]

The U.S. leveled its most serious allegation of a treaty violation against Russia on Monday, accusing it of breaking a 1987 arms treaty by testing a ground-launched cruise missile. President Obama apparently wrote Putin a letter conveying the charge, which will be made public in an upcoming State Department report. Meanwhileβ€”although sanctions haven’t deterred Russia from supporting separatists in Ukraine so farβ€”the United States and European Union hope a fresh batch will do the trick. The U.S. is joining the EU in hitting Russia with new economic sanctions this week. According to Tony Blinken, a White House national security adviser, Putin may be preparing to send rocket launchers to the east to help rebels.