The U.S. administration has ratcheted up the rhetoric as it wrestles with Russia over mounting tensions in Ukraine, engaging the Kremlin in the kind of confrontational and caustic war of words it largely eschewed during U.S. President Barack Obama's first five years in office.
Radio Free Europe/Radio Liberty: U.S. takes off the gloves in rhetorical rumble with Russia
Victoria Nuland was appointed as U.S. assistant secretary of state for European and Eurasian affairs that means higher tensions with Russia over Ukraine crisis.
