Syrian troops and militia battled on Wednesday to repel an Islamic State attack on the city of Hasaka in the northeast, and a Kurdish official said the government forces may not be able to hold off the jihadists. Hasaka city is divided into zones run separately by the government...

Thousands of Iranian and Iraqi fighters have been deployed in Syria in past weeks to bolster the defenses of Damascus and its surroundings, a Syrian security source told AFP Wednesday. "Around 7,000 Iranian and Iraqi fighters have arrived in Syria over the past few weeks and their first...

Steady advances by insurgents on key fronts in Syria mean President Bashar al-Assad is under more military pressure than at any point in the four-year-old war. Losses in the north, east and south to groups including al Qaeda's Syrian arm and Islamic State may test Assad's hold...

The United States has accused the Syrian military of carrying out air strikes to help Islamic State fighters advance around the northern city of Aleppo, messages posted on the U.S. Embassy Syria official Twitter feed said. Islamic State fighters pushed back rival insurgents north of Aleppo on...