Ukrainian prime minister: Russia has made a "declaration of war" -- SIMFEROPOL, Ukraine - Ukraine mobilized for war on Sunday, after Russian President Vladimir Putin declared he had the right to invade, creating the biggest confrontation between Moscow and the West since the Cold War. -- "This is not a threat: this is actually the declaration of war to my country," said Ukraine's Prime Minister Arseny Yatsenyuk, head of a pro-Western government that took power when Russian ally Viktor Yanukovich fled last week. -- Putin obtained permission from his parliament on Saturday to use military force to protect Russian citizens in Ukraine, spurning Western pleas not intervene. - More, CBSNews, at: http://www.cbsnews.com/news/ukraine-prime-minister-russia-had-no-reason-to-invade/