Syrian activists say airstrike killed 23 in rebel-held town

BEIRUT -- An airstrike hit a busy market in a rebel-held town in northwestern Syria on Monday, killing at least 23 people, according to opposition activists and a war monitoring group. The airstrike took place in the town of Maaret al-Numan and also wounded more than 30 people, according to the reports from the region which has witnessed intensive airstrikes and bombardment almost every day as Syrian troops, backed by Russian air cover, try to push their way into the enclave near the Turkish bor