president obama at the white house in the coming hours. >> he is expected to ask for more air strikes and weapons to fight isis. his visit as the obama administration's pointman calls isis a problem that is "off the charts historically." mckirk goes that military action may extend beyond iraq and syria. >> on the front lines, iraq's oil minister says security forces are pushing back against the militants who attacked the country's largest oil refinery. and isis released a new propaganda video showing off their destruction of ancient city of namu. >> though isis had to retreat from tikrit. militants are not letting up. >> the trip to washington comes as his country endures attacks on multiple fronts. >> reporter: isis is striking back. and hard.