NATO's new supreme commander, General Curtis Scaparrotti, says Russia's aggressive behavior must be met by force should deterrence fail.
A blast at a mine in a separatist-controlled part of eastern Ukraine's Luhansk region has killed at least one miner.
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A team of open-source researchers investigating the downing of Malaysia Airlines Flight 17 says it has positively identified a Russian Buk missile launcher that shot down the plane.
The European Union's top enlargement official says that Turkey will not get an easier ride than Ukraine, Georgia, and Kosovo in securing a liberalized visa regime with the 28-member bloc.
In the run-up to celebrations marking the defeat of Nazi Germany, a memorial in Moscow to Kyiv's heroism is conspicuously without flowers.
U.S. Defense Secretary Ash Carter has given his backing to German plans to send troops to Lithuania to reassure NATO’s Eastern European allies wary of a resurgent Russia.
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Two Ukrainian energy companies that lost control of assets in Crimea when Russia seized the Ukrainian peninsula have asked a UN arbitrator to award compensation.
Police in Ukraine's Black Sea port city of Odesa say they found three hand grenades on May 2 ahead of a commemoration ceremony for the 48 people who were killed in a 2014 clash between pro-Ukrainian and pro-Russian demonstrators.
Tensions are high in the Ukrainian city of Odesa on the second anniversary of clashes between pro-Kyiv demonstrators and Moscow-backed militants that killed dozens of people.