Instead of participating in a high-profile U.S. military air combat exercise in Alaska that starts April 30, the Israeli Defense Forces ordered a squadron of its fighter jets -- likely the 69th Squadron, equipped with F-15I Ra'am strike fighters -- to remain in Israel, while other of its air force assets have been allowed to proceed. Given that the U.S. Red Flag exercises require substantial preparation and confer valuable experience, Israel would not have made the decision to keep its fighters home lightly. The withdrawal, announced April 17, indicates a heightened probability that a cycle of escalation and confrontation between Iran (and, by extension, Hezbollah) and Israel lies ahead....