China and India accounted for more than half of the total number of global deaths attributable to air pollution in 2015, researchers said in a study published on Tuesday.

• February 14, 2017

Iran has again allowed Russian planes to use its airspace during recent operations in Syria, a senior Iranian security official was quoted as saying on Saturday.

• February 11, 2017

German leader Angela Merkel urged Russia's Vladimir Putin in a telephone call on Tuesday to use his influence on separatists in eastern Ukraine to stop the violence there, and the two agreed on the need for new ceasefire efforts, a German government spokesman said.

• February 7, 2017

Yemen is emerging as a test ground for U.S. President Donald Trump's forceful approach to al Qaeda and Iran, but his first actions there risk drawing his administration further into its convoluted two-year-old war.

• February 7, 2017

Israeli Prime Minister Benjamin Netanyahu urged "responsible nations" to join new sanctions against Iran on Monday during a visit to London, but Britain defended a nuclear deal sealed between major powers and Tehran.

• February 6, 2017

A Revolutionary Guards commander said Iran would use its missiles if its security is under threat, as the elite force defied new U.S. sanctions on its missile programme by holding a military exercise on Saturday.

• February 4, 2017

Ukraine and Russia-backed separatists accused each other of resuming artillery attacks in east Ukraine on Saturday, breaking a lull in shelling at a frontline hot-spot that had raised hopes the conflict's worst escalation in months was waning.

• February 4, 2017

Germany began sending tanks and other equipment to Lithuania on Tuesday as part of a NATO mission to beef up the defense of eastern Europe and send a signal of resolve to Russia, which has denounced the build-up as an act of aggression.

• January 31, 2017