Ukrainian Democratic Alliance for Reform (UDAR) party leader Vitaly Klitschko (C) addresses activists of the Right Sector movement. He has said he will not run for the presidency. Photograph: Valentyn Ogirenko/Reuters.

Boxer-turned-politician Vitaly Klitschko pulled out of the race to be Ukrainian president today, throwing his weight instead behind billionair(...)

A woman and her child walk past soldiers without insignia as they stand guard outside a Ukrainian military base in Simferopol today. Photograph: Uriel Sinai/The New York Times. 1:04

A Ukrainian serviceman was killed today at a Ukrainian base that came under attack in Crimea’s main town Simferopol. (...)

The arrival of two leading Ukrainian politicians in Dublin to plead with European Union leaders for meaningful action to prevent a Russian take(...)

A portrait of Ukrainian opposition leader Yulia Tymoshenko is seen during a rally on Independence Square in downtown of Kiev. Photograph: Maxim Shipenkov/EPA

Ukrainian opposition leader Yulia Tymoshenko, freed from prison guard yesterday after her arch-rival president Viktor Yanukovich fled Kiev, sai(...)

A general view of clashes at Independence Square in Kiev today where  Ukrainian riot police charged protesters occupying the central  square this morning. Photograph: Vasily Fedonsenko/Reuters. 0:36

The United States and Nato have warned Ukrainian president Viktor Yanukovich not to involve the military in his country’s spiralling crisis, after (...)

US assistant secretary of state Victoria Nuland apologised to EU colleagues over contents of hacked telephone call. Photograph: Gleb Garanich/Reuters

The top US diplomat in Europe has privately apologised for an obscene remark about the European Union, a comment the German chancellor Angela Merkel d(...)

Ukraine’s foreign minister Leonid Kozhara (L) and head of the Ukrainian UDAR (Punch) party Vitali Klitschko attend the annual Munich Security Conference today. Photograph: Reuters

The United States and Europe exchanged angry words with Russia today in a tug-of-war over Ukraine, with US, EU and Nato leaders saying Moscow must not(...)

 Protesters clash with riot police during their protest in  Kiev, Ukraine last night. Photograph: Sergey Dolzhenko/EPA

Protesters clashed with riot police in the Ukrainian capital overnight after tough anti-protest legislation, which the political opposition says paves(...)

Pro-European integration protesters attack a police van during a rally near government administration buildings in Kiev Photograph: Gleb Garanich /Reuters

Protesters clashed with riot police in the Ukrainian capital today after tough anti-protest legislation, which the political opposition says paves the(...)

Russian president Vladimir Putin and his Ukrainian counterpart Viktor Yanukovych at the Kremlin in Moscow yesterday. Russia offered $15 billion in loans and a sharp discount on natural gas prices to Ukraine. Photograph: Sergei Karpukhin/Pool via The New York Times

Ukraine’s president faced calls to resign today over a $15-billion (€11 billion) bailout from Russia which the opposition and protesters said had sold(...)