The Ukrainian military and Russian-backed separatists in eastern Ukraine accused each other on January 1 of violating a shaky holiday truce between the warring sides.
Russia says it's suing Ukraine for defaulting on a $3 billion Eurobond debt owed to Moscow.
After grappling with migrants and rising right-wing politicians in 2015, the European Union may be in for more of the same -- and perhaps some new surprises -- in 2016.
Ukraine's free-trade agreement with the European Union has come into force, coinciding with the start of Moscow's food embargo against Kyiv.
Ukrainian police are blaming saboteurs yet again for blowing up an electricity pylon that shut down electricity for at least one quarter of the residents of Crimea.
Russian President Vladimir Putin has approved a new national-security strategy accusing the United States of trying to “contain” Russia through “political, economic, military, and informational pressure.”
Crimeans are bracing for a dark, cold New Year's Eve as the peninsula is hit by yet another power outage.
The Islamic State (IS) extremist group has claimed responsibility for a shooting attack late December 29 that killed one person at a historic citadel in Russia's North Caucasus region of Dagestan.
A Russian court has sentenced a blogger to five years in a Siberian penal colony for "inciting hatred and extremism" after he criticized Russian intervention in Ukraine and, separately, accused local authorities of corruption and incompetence.
Russian President Vladimir Putin has given the state intelligence service the authority to use weapons in crowds and fire at women and children under certain circumstances.
Moscow called for the arrest of a Turkish man it claims killed the pilot of a Russian jet downed by Turkey last month.
A Crimean official has said that Ukraine has cut off a major source of electrical power to the region, a month after saboteurs first plunged the peninsula annexed by Russia into darkness.