u.s. is winning now. barbara, thanks very much. russia is also upping it military presence in the region but has a very different strategy and goals when if comes to fighting isis. our senior white house correspondent jim acosta is in paris and has been traveling with president obama. the president and russian president vladimir putin are deeply divided when it comes to syria? >> reporter: they are, wolf. president obama was very candid today that he has not made much headway in convincing vladimir putin to change his tactics in syria. the shift, the president conceded, could take months as isis continues to grow stronger. they've met face-to-face twice in the last month but they still don't see eye to eye. so president obama told reporters a the a climate summit in paris, expect russia's vladimir putin to continue to go his own way in the war on isis. at least for now. >> mr. putin, i don't expect that you're going to see a 180