militants now face and how fiercely they fight. in the battle some now call the last stand of isis. for the going is slow, the battle could last for months, and the kind of attacks the american sniper says he is here to stop may never end. david. >> ian pannell and our team there in syria, we thank you all. we turn back home to the health care showdown. in this country, it's coming tomorrow. millions of americans of course, concerned about the future of their coverage. president trump putting republicans on notice tonight on the eve of the latest attempt to repeal and replace obamacare. the president making a last-ditch appeal targeting his own party. >> so far senate republicans have not done their job in ending the obamacare nightmare. any senator who votes against starting debate is telling america that you are fine with the obamacare nightmare. >> senate majority leader, mitch mcconnell, tonight, trying to sway republican holdouts hoping to have enough votes to move forward. many senators tonight admitting they are unsure which health