U.S. President Barack Obama demanded Russia stop supporting separatists in eastern Ukraine after the downing of a Malaysian airline by a surface-to-air missile he said was fired from rebel territory raised the prospect of more sanctions on Moscow, according to Reuters. At least one American was among the almost 300 killed, he said, a revelation that raises the stakes in a pivotal incident in deteriorating relations between Russia and the West. -- SPA 21:20 LOCAL TIME 18:20 GMT تغريد