Of course he said the republicans created Isis, you quoted him.
“ISIS exists.... because of the hawks in our party”
Are you missing the “the hawks in our party who...”?
He is blaming it on specific individuals who supported a particular policy (indiscriminately giving weapons to Sunni Islamists) and who also happen to be in HIS party.
Basically, he is pointing a finger at McCain and Lyndsey Graham, whose criticism of him prompted this statement on Morning Joe.