Britain joined U.S.-led air strikes against Islamic State in Syria on Thursday, but Vladimir Putin issued bitter new denunciations of Turkey for shooting down a Russian plane, demonstrating the limits to international solidarity.

• December 3, 2015

Russia's defense ministry said on Wednesday it had proof that Turkish President Tayyip Erdogan and his family were benefiting from the illegal smuggling of oil from Islamic State-held territory in Syria and Iraq.

• December 2, 2015

Russia's entry into the war in Syria has changed the balance on the ground, Syrian President Bashar al-Assad said in an interview on Czech Television, and he predicted that support from his main international ally would remain strong.

• December 1, 2015

Turkey's prime minister dismissed on Monday any suggestion Ankara should apologize for downing a Russian warplane in its airspace last week, after winning strong NATO support for the right to defend itself.

• November 30, 2015

President Vladimir Putin is fully mobilised to tackle what the Kremlin regards as an unprecedented threat from Turkey following the shooting down of one of its warplanes by a Turkish F-16, the Russian leader's spokesman said on Saturday.

• November 28, 2015

Turkish President Tayyip Erdogan warned Russia on Friday not to "play with fire", citing reports Turkish businessmen had been detained in Russia, while Moscow said it would suspend visa-free travel with Turkey.

• November 27, 2015

France and Russia will exchange intelligence on Islamic State and other rebel groups to improve the effectiveness of their aerial bombing campaigns in Syria, French President Francois Hollande said on Thursday after talks with Vladimir Putin.

• November 26, 2015

China will shake up its military by establishing a joint operational command structure by 2020 and rejig existing military regions as part of overall reforms, President Xi Jinping said in a comments reported on Thursday.

• November 26, 2015