ISIL is not islamic???

President Obama boldly asserts that ISIL, also known as Islamic State, is not islamic.

https://www.youtube.com/watch?v=pwp8qKvE-0g

I find this very hard to swallow in the light of the evidence.  Why are young muslims from the UK and around the world so eager to join Islamic State and engage in jihad, violent jihad? Surely they follow the teaching of Islam and believe that they are practising their religion, Islam, as fighters for Islamic State, ISIS, or ISIL.

There are passages in the Quran that are used to justify the actions of Islamic State. They claim that they are true to Islam and the teaching of Muhammad.  Is this not an established fact? Are they not purists and fundamentalists, but nevertheless Islamic?

http://www.realclearpolitics.com/video/2014/09/10/maher_vs_charlie_rose_to_claim_islam_is_like_other_religions_is_naive_and_plain_wrong.html