Some Russian soldiers are quitting the army because of the conflict in Ukraine, several soldiers and human rights activists have told Reuters. Their accounts call into question the Kremlin's continued assertions that no Russian soldiers have been sent to Ukraine, and that any Russians fighting alongside rebels there are volunteers.
Thousands of troops marched across Moscow's Red Square on Saturday and tanks rumbled through streets to mark the 70th anniversary of victory over Nazi Germany, an event boycotted by Western leaders over Russia's role in the Ukraine crisis.
For the first time in 70 years, Ukraine on Friday joined most of Europe in marking the end of the World War Two a day ahead of Russia, which it accused of exploiting the anniversary to display its military might.
Buoyed by his strong defense background and Poles' renewed fear of Russia stoked by the Ukraine crisis, Bronislaw Komorowski looks likely to win the first round of Poland's presidential election on Sunday.
A new high tech battle tank hailed by Russia as a "masterpiece" appeared to break down on Red Square on Thursday during a rehearsal for the military parade at which it will make its long-awaited debut.
NATO launched one of its biggest-ever anti-submarine exercises in the North Sea on Monday, inviting non-member Sweden for the first time, amid increasing tensions between Russia and its northern neighbors.
Russia's military may be taking advantage of a recent lull in fighting in eastern Ukraine to lay the groundwork for a new military offensive, NATO's top commander told the U.S. Congress on Thursday.
China will hold joint naval drills with Russia in mid-May in the Mediterranean Sea, the first time the two countries will hold military exercises together in that part of the world, the Chinese Defence Ministry said on Thursday.
Ukraine's leader warned on Tuesday that a war with pro-Russian separatists could still break out again as its military said the rebels had greatly stepped up attacks and widened the area of their operations despite a ceasefire.
A fragile ceasefire between Ukrainian government forces and pro-Russian separatists came under renewed pressure on Sunday with the Ukrainian military reporting a serviceman had been killed and seven others wounded in rebel attacks.
Armenia marked the centenary on Friday of a mass killing of Armenians by Ottoman Turks with a simple flower-laying ceremony attended by foreign leaders as Germany became the latest country to respond to its calls for recognition that it was genocide.
The eight Arctic Council nations pledged on Friday to do more to combat climate change that is shrinking the vast frigid region, with countries trying to put aside disputes over issues like Russia's intervention in Ukraine.
The Russian Defense Ministry said on Thursday that U.S. troops were training Ukrainian forces in the conflict zone in eastern Ukraine, but the Pentagon flatly denied it, accusing Moscow of a "ridiculous attempt" to obscure its own activity in the region.
Republican Jeb Bush will visit three U.S. allies, Germany, Poland and Estonia, in early June to get a first-hand view of European economic and security challenges as he explores a run for his party's presidential nomination in 2016, a Bush aide said on Monday.
Two Russian opposition parties agreed on Friday to run on a joint platform in 2016 parliamentary elections, aiming to make a first step in uniting fractious Kremlin adversaries after the killing of party leader Boris Nemtsov.
A Ukrainian journalist known for his pro-Russian views was shot dead on Thursday in Kiev, a day after the killing of a political supporter of ousted Moscow-backed President Viktor Yanukovich, driving up tension between Moscow and Kiev.
Top Russian officials accused the United States on Thursday of seeking political and military dominance in the world and sought to put blame on the West for international security crises, including the conflict in east Ukraine.
Ukraine's military accused pro-Russian rebels on Monday of using heavy weapons that were meant to have been withdrawn under a ceasefire deal, after one Ukrainian serviceman was killed and six wounded in rebel-held territories.
Calling Russia the biggest challenge to European security, Nordic nations agreed on closer defense ties and increased solidarity with the Baltic states on Thursday, aiming to increase regional security through deterrence.
When Ukrainians toppled a pro-Russian president last year, nowhere was the euphoria greater than in Lviv, a short drive from the EU border, where people have dreamt for generations of escaping Moscow's orbit to join the West.
Kremlin spokesman Dmitry Peskov said on Tuesday Russia was not seeking to buy political influence in the European Union member state Hungary through a nuclear deal, defending Moscow's cooperation with Budapest as mutually beneficial.