Fighting between pro-Russian separatists and Ukrainian government troops has increased sharply in eastern Ukraine in defiance of calls to observe a year-old peace agreement, the head of an international monitoring mission said on Friday.

• April 15, 2016

Syria's chief government negotiator sought on Friday to steer a new round of peace talks away from the political transition that U.N. mediators hope to promote, as increased fighting near Aleppo threatened to undermine a shaky truce.

• April 15, 2016

Russia's Federal Security Service and tax inspectors on Thursday searched the offices of Mikhail Prokhorov, a tycoon whose newspaper has published revelations about people close to Vladimir Putin, four sources close to his businesses said.

• April 14, 2016

NATO should return to Cold War ways of thinking in its relations with Russia, and speak to Moscow from a position of strength to counter its renewed assertiveness in eastern Europe, Polish deputy defense minister said.

• April 14, 2016

Two Russian warplanes flew simulated attack passes near a U.S. guided missile destroyer in the Baltic Sea on Tuesday, the U.S. military said, with one official describing them as one of the most aggressive interactions in recent memory.

• April 13, 2016

France and Iran voiced concern over escalating violence in Syria on Tuesday, echoing warnings from the United States and Russia as fighting near the city of Aleppo put more pressure on a fragile truce agreement.

• April 12, 2016

There are no plans to storm the Syrian city of Aleppo despite thousands of Al-Nusra militants massing around the city, the Russian military general staff, which is providing air support to the Syrian army, said on Monday.

• April 11, 2016

Russia has delivered the first part of an advanced missile defense system to Iran, Iranian media reported on Monday, starting to equip Tehran with technology that was blocked before it signed a deal with world powers on its nuclear program.

• April 11, 2016