In November, Edward led a raid on Qaqun, which could have served as a bridgehead to Jerusalem, but both the Mongol invasion and the attack on Qaqun failed. Things now seemed increasingly desperate. Finally, an attack by a Muslim assassin in June forced him to abandon any further campaigning. Although he managed to kill the assassin, he was struck in the arm by a dagger feared to be poisoned, and became severely weakened over the following months.