Translate the English statements, SL translation only (INTRO LOGIC)

5. The U.S. will attack if and only if Saddam does not disarm. (U, S) 6. Saddam will not defend himself unless the U.S. attacks. (U, S) 7. Either Saddam won't defend himself, or the U.S. won't attack. (S, U) 8. Neither Saddam will defend himself nor will the U.S. attack. (S, U)