We all know that Bitcoin is also popular to criminals because they can use it without exposing their identity. It will be more convenient to them to use Bitcoin so that they can hide their identity. Do you think that terrorist groups like ISIS use it for their transactions?
I don't see any reason why the terrorist should use bitcoin for transactions. They can just use their money to buy things do things the same for same results. They can hide their identity but their location can be traced. Terrorist will not risk that. They prefer doing things the old way since it is proven that it is effective and it doesn't leave any trace. Terrorist will always find ways to get their funds. By the way,why do you ask? Peace bro.