Croatia has lifted a blockade on its border with Serbia on September 25, ending a week of border disputes between the two countries over the flow of migrants.

• September 24, 2015

Russia is planning a second major military base near the border with Ukraine, where NATO accuses Russian troops of helping pro-Moscow separatists fight Kiev's forces.

• September 23, 2015

Russian Foreign Minister Sergei Lavrov said on Wednesday the United States was increasingly receptive toward Moscow's position on the conflict in Syria, an assertion quickly disputed by Washington.

• September 23, 2015

Satellite photos taken in mid-September and obtained by IHS Jane's show Russian forces developing two additional military facilities near Syria's Mediterranean coast, Rob Munks, editor of IHS Jane's Intelligence Review, said on Tuesday.

• September 22, 2015

Pro-Russian rebels in Ukraine said on Tuesday they were going ahead with local elections in October and November in defiance of Kiev, and only hours after they appeared to say they were prepared to postpone the vote to avoid "stalemate" in peace efforts.

• September 22, 2015

Ukraine pressed NATO on Tuesday for Western weaponry to help defend itself against pro-Russian separatists but the head of the alliance resisted for fear of threatening a fragile ceasefire with Russian-backed rebels.

• September 22, 2015

Rebels who have inflicted big losses on Syrian President Bashar al-Assad say Russia's intervention in support of its ally will only lead to an escalation of the war and may encourage the rebels' Gulf Arab backers to pour in more military aid.

• September 21, 2015

Israel and Russia agreed on Monday to coordinate military actions over Syria in order to avoid accidentally trading fire, Prime Minister Benjamin Netanyahu said during a visit to Moscow.

• September 21, 2015