Ukrainian government forces and pro-Russian separatists exchanged artillery fire in contested eastern Ukraine this weekend in the most pronounced military escalation since the two sides reached a ceasefire agreement in February. The renewed clashes cast doubt over the truce's long-term viability in a conflict that has killed more than 6,000 people and displaced hundreds of thousands of civilians since it began in April 2014.
Russia's War Against Ukraine
International Business Times: Russian-backed separatists, government forces exchange artillery fire, threatening uneasy truce in eastern Ukraine

An armed pro-Russian rebel is seen through a shrapnel hole in wall in the village of Spartak near the airport of Donetsk on April 10.