U.S. warns Americans in Russia about possible `` violence or anti-U.S. actions '' U.S. , Russian talks go nowhere : `` We do n't have a common vision , '' Lavrov says . John Kerry : Russia has a choice , will pay price if it annexes Crimea . Kiev 's new Western-leaning government -- which came to power following the ouster of President Viktor Yanukovych , who fled last month after succumbing to intense public pressure in part for aligning more with Moscow and less with the European Union -- has insisted that Ukraine 's territorial integrity , including Crimea , must be respected . The White House said on Friday that President Barack Obama had spoken with his Russian counterpart, Vladimir Putin, by telephone and urged him to pull back from the Crimean Peninsula. `
U.S. warns Americans in Russia about possible `` violence or anti-U.S. actions '' U.S. , Russian talks go nowhere : `` We do n't have a common vision , '' Lavrov says . John Kerry : Russia has a choice , will pay price if it annexes Crimea . The White House said on Friday that President Barack Obama had spoken with his Russian counterpart, Vladimir Putin, by telephone and urged him to pull back from the Crimean Peninsula. `