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...

A sprawling forested estate of graceful waterways and summer houses - half the size of Monaco but just one hour's drive from Kiev - stands as a symbol of the folly of Ukraine's fugitive president. Even the most cynical Ukrainians, who on Saturday streamed to see Viktor Yanukovich's...

 WhatsApp, the rapidly expanding mobile messaging app, suffered an outage for more than three hours on Saturday, frustrating users just days after its acquisition by Facebook for $19 billion. "WhatsApp service has been restored. We are so sorry for the downtime...," WhatsApp...

Russian Deputy Prime Minister Dmitry Kozak has said a Cossack who horsewhipped members of Pussy Riot at a protest in Sochi has been held accountable for the attack. The Cossacks have been used since last year as an auxiliary police force to patrol the streets in the Krasnodar...