Russian investigators worked Tuesday to determine whether the assassination of their ambassador to Turkey was the work of a lone gunman or part of a wider conspiracy as the two countries, which have backed opposing sides in the Syrian war, said they would not let the killing disrupt...

Syria's army broadcast messages into the last rebel enclave of Aleppo saying it would enter the area on Tuesday, a military media unit run by the government's ally Hezbollah reported, urging insurgents to speed up their evacuation of the city. A rebel official based in Turkey told Reuters...

“Responsibility for this brutality lies in one place alone, with the Assad regime and its allies, Russia and Iran,” President Obama said last week of the barbarity in Aleppo, Syria, “and this blood and these atrocities are on their hands.” My journalism students and I here in Dubai...

Turkish police detained Monday the sister and mother of the gunman who shot dead the Russian ambassador at an art gallery in the Turkish capital, broadcaster CNN Turk reported. It said the two women were detained in the southwestern Turkish province of Aydin....