Russian aircraft carrying nearly 2,000 suspected troops have landed at a military airbase near the regional capital of the restive Crimean peninsula, a top Ukrainian official has said, accusing Moscow of an "armed invasion". "Thirteen Russian aircraft landed at the airport of...

Armed men took control of two airports in the Crimea region on Friday in what Ukraine's government described as an invasion and occupation by Russian forces, raising tension between Moscow and the West. Russia's Black Sea fleet, which is based in the region, denied its forces were...

The United States told Russia to demonstrate in coming days that it was sincere about its promise not to intervene in Ukraine, after armed men seized the regional parliament in a mainly ethnic Russian region and raised the Russian flag. Crimea, the only Ukrainian region with an...

A top Ukrainian opposition figure assumed presidential powers Sunday, plunging Ukraine into new uncertainty after a deadly political standoff — and boosting long-jailed Yulia Tymoshenko's chances of a return to power. The whereabouts and legitimacy of President Viktor Yanukovych are...