Russian president Vladimir Putin has repeatedly vowed to defend people who feel Russian across the former Soviet Union and especially in Ukraine. Photograph: Reuters/Mikhail Klimentyev/RIA Novosti/Kremlin

Moscow has vowed to respond to alleged artillery fire from Ukraine that it claims killed a Russian man near the countries’ border, warning Kiev tha(...)

 A woman stands near a house destroyed in shelling   by Ukrainian armed forces in a village near the city of Marinkao, 15km east of Donestk. Photograph:  Alvaro Ybarra Zavala/Getty Images

Moscow threatened Kiev today with “irreversible consequences” after a man was killed by a shell fired across the border from Ukraine, describing the i(...)

Ukrainian president Petro Poroshenko at a press conference during the European leaders’ summit in Brussels yesterday.  Photograph: EPA/Julien Warnand

EU leaders handed down a four-day deadline to Russia to release prisoners in Ukraine and enter talks with president Petro Poroshenko on a definitiv(...)

A Ukranian military officer stands at a highway checkpoint today near Slovansky, Ukraine. At least 6 Ukranian soldiers were killed and more were reportedly injured by pro-Russian separatists in the nearby city of Kramatorsk. Photograph: John Moore/Getty Images

Six Ukrainian soldiers were killed and eight wounded in an ambush by pro-Russian separatists near the eastern Ukrainian town of Kramatorsk, the defen(...)