The US and its Arab allies have launched a series of air strikes in Syria targeting Isis positions as a new chapter of American military involvement in the war-torn nation begins.

This is the first time the Obama administration has directly waded into the complicated conflict zone in Syria, which is still under President Bashar al-Assad, against Isis. The US had informed Syria before launching the air strikes, said Damascus

"I can confirm that US military and partner nation forces are undertaking military action against [Isis] terrorists in Syria using a mix of fighter, bomber and Tomahawk Land Attack Missiles," Pentagon spokesperson Rear Admiral John Kirby said in a statement.

"Given that these operations are ongoing, we are not in a position to provide additional details at this time."

America's Arab allies such as Saudi Arabia, Jordan and the UAE are believed to be involved in the Syria operation.