Because he recognizes that the maniacs have what they perceive as claims on Jordan, Israel, Palestine and Lebanon. Sane people realize that even if such claims exist they have no validity whatsoever.
Their only valid claim to Syria and Iraq is that US policy created their existence and growth in those two countries. Is Obama implying he'd like to contribute to their growth in those other countries?
I would like to call ISIS disintegrated, but our disgusting government (and everyone elses) won't get together and kill the cancer instead of letting it spread.
They have no claims to anything. However they did call themselves ISIS and they are in Syria and Iraq so it is as good a name as anything. Obama is playing terminology games just like he does when he refuses to accept they are Islamic terrorists and refuses to say we are at war with them.
I say double down and refuse to accept the premises and terminology of the enemy (Obama)