Washington/Damascus, Dec. 20 -- The US military on Friday carried out a sweeping series of air strikes against dozens of Islamic State targets across Syria, in retaliation for an attack last weekend near Palmyra that killed three American soldiers, US Central Command (CENTCOM) said.

The operation, dubbed 'Hawkeye Strike', marked the most extensive US action against ISIS in Syria in several years, and comes amid the thawing of diplomatic ice between Washington and Damascus, after decades of animosity.

According to CENTCOM, US and partner forces struck around 70 targets linked to ISIS infrastructure, command nodes and weapons sites.

The strikes began at about 4:00 pm ET and focused largely on northeastern Syria near Deir ez-Zur, close to t...