Well, from my point of view, all religions are equally false. But why do you say Islam is a cult? Isn't the definition of a cult a religion you don't approve of? Sort of like "freedom fighters" are terrorists you do approve of.
There is one God and its not Islams false God!
Hmm... Should we declare war on India? 200 million Indians are Islamic, and most of the rest believe in a great plethora of gods (all of whom, presumably, you would consider false).
How could you possibly know such a thing? Are you God?
Cordially,