You keep talking about terrorists. You do realize that the terrorists are devout believers in your god right and they say he is telling them to kill people.
Wrong. God is not in control of you or your actions or your thoughts. He gave that to you so you'd have free will.
That in no way removes His omnipotence. Just because He can control you doesn't mean that He does.
Yes, again. God knows what you will do & will not prevent you from doing so. You can do X, Y, Z, LMNOP, X123c...... It's all up to you.