The main questions now are how much the conflict will escalate and whether the United States will get more directly involved in the defense of Israel.

Tehran said the attack is in retaliation for the killing of Hamas and Hezbollah leaders.

Hamas praised on Tuesday what it called Iran's "heroic" missile attacks avenging the deaths of Hamas leader Ismail Haniyeh, Hezbollah leader Sayyed Hassan Nasrallah, and Iranian Brigadier General Abbas Nilforoushan.