American forces killed an ISIS group leader and another of the group’s members in a strike in Syria, the US military said on Friday.Washington has stepped up military action against the extremist group since the fall of Bashar al-Assad’s government earlier this month, hitting areas that were shielded by Syrian and Russian air defenses before a lightning offensive by opposition who now control the country.The strike took place Thursday in Deir Ezzor province in eastern Syria, killing ISIS leader “Abu Yousuf” and another operative, the US Central Command (CENTCOM) said on social media, without providing further details on the two extremists.For all the latest headlines follow our Google News channel online or via the app.“This airstrike is part of CENTCOM’s ongoing commitment, along with partners in the region, to disrupt and degrade efforts by terrorists to plan, organize, and conduct attacks,” CENTCOM said.The strike “was conducted in an area formerly controlled by the Syrian regime