The Islamic State militant group has seized Syria's last border crossing with Iraq after Syrian government forces withdrew, the Syrian Observatory for Human Rights monitoring group said on Thursday. The al-Tanf crossing, known as al-Waleed in Iraq, is in Syria's Homs province, where...

Around a third of the 200,000 people living in the Syrian town of Palmyra may have fled in the past few days, during fighting between government forces and Islamic State militants, the U.N. human rights office said on Thursday. Citing what she said were credible sources, U.N. human rights...

At least 40 rebels were killed as an army airstrike on their base in the northern Syrian city of Aleppo triggered a huge explosion Thursday, a monitoring group said. The Islamist rebels had shells stored at the base, which magnified the blast, the Syrian Observatory for Human Rights head, Rami...

Al-Qaeda's Syria wing, the Nusra Front, said on Thursday it had released 27 Islamic State fighters who were arrested week ago with 23 others in the mountainous region of Qalamoun near the Lebanese border. Nusra's Shariah court said the freed fighters 'had not involved in killing acts against...