Islamic State has seized new territory from Syrian rebels in northern Syria, advancing in an area where Turkey and the United States are planning to open a new front against the group. The Syrian Observatory for Human Rights, a UK-based group tracking the war, said it had seized five...

Syrian insurgents, the Syrian army and Lebanese group Hezbollah agreed on a 48-hour ceasefire in the rebel-held town of Zabadani near Lebanon's border and two Shi'ite villages in Idlib province, sources close to negotiations on both sides said. The ceasefire would begin Thursday at 6 a.m....

A British hacker who U.S. and European officials said became a top cyber expert for Islamic State in Syria has been killed in a U.S. drone strike, a U.S. source familiar with the matter said on Wednesday. It was the second reported killing of a senior ISIS figure in the last eight days after...

The fate of two brothers from Kabul, one grievously wounded, the other killed fighting in Syria, spotlights Iran’s covert but active recruitment of Afghan refugees to buttress President Bashar Assad’s steadily depleting forces. Shiite Iran, Assad’s key military and financial patron,...