"It’s not the religion that creates terrorists, it’s the politics."
(
http://www.theguardian.com/commentisfree/belief/2015/jun/27/its-not-the-religion-that-creates-terrorists-its-the-politics?CMP=share_btn_tw)
There seems to be no conjunction that links "It’s not the religion that creates terrorist" with "it's the politics". There is only a comma.
I'm not sure whether it's grammatical or not.