Four Americans killed not suicide bomb attack in Syria. President trump at Dover Air Force Base in Delaware today paying respects that bombing the deadliest assault on US troops in Syria since two when he fifteen. Ice is claiming responsibility. The violence coming about a month after the presence of the terror group had been defeated there ABC's senior foreign correspondent Ian panel now with the latest. A somber homecoming for duke the red force base as the bodies of four Americans killed in the suicide blast in Syria this week. Return home one last time. The president meeting the families. Saluting as the remains of former Navy SEALs school was the transferred to a military ban. Woods was killed along with army green parade Jonathan from a navy interpreter Shannon Ken's. And get a attack head a civilian contractors interpreter. Ice is saying it carried out the attack just one month after trump announced who will workings diocese was one. They're all coming back. Are they coming back now we won. The day after Defense Secretary Jim Mattis resigned in protest. Friday a pentagon spokesman appearing to contradict the president saying ice is remains a threat. Last year I Metropool where is his child soldier in prison in Iraq what do you think RSS is golf for a Oregon and unrepentant he says prices and wasn't beaten and would fall ice until judgment day one. Tom despite the American withdrawal we're hearing it could take months to defeat touches in the last remaining strongholds in Syria and even then it doesn't guarantee an end to the threat from the extremists for example here in Iraq a year and a half. After they were defeats he Mosul. Ice is remains a potent threat and the American led coalition continues to bomb them told Ian panel to new developments at a both Syria and Iraq Friday and thank you.