The Kremlin says Igor Sergun, who as the head of the Russian military intelligence agency known as the GRU was under Western sanctions for actions in Ukraine, has died unexpectedly.
The Ukrainian president's "joke" magazine cover takes aim at Putin, elicits Russian mockery.
Ukraine has announced it will ban food products from Russia starting on January 10,a response to a similar ban by Moscow.
The Ukrainian-language children's drama school Svitanok has been performing in Crimea for over two decades. Now, its founders say it must close down amid a crackdown on Ukrainian identity on the annexed peninsula.
A gas pipeline leaked in the Zakarpattia region of western Ukraine, but the leak is not affecting consumers, Ukrainian gas transmission system operator Ukrtransgaz reported January 1.
Russian Prime Minister Dmitry Medvedev approved a discount in the price of natural gas for Ukraine to bring Russian gas prices closer to prices in European markets.
Residents of Crimea face several more months of power shortages as Russia appears to have ended a contract with Ukraine to deliver electricity to the peninsula it annexed in 2014.
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.
Ukraine's free-trade agreement with the European Union has come into force, coinciding with the start of Moscow's food embargo against Kyiv.
Ukrainians are debating a petition to celebrate Christmas on December 25, like Western Europe, rather than continuing to mark the holiday on January 7 according to Orthodox Christian tradition.
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.