Could the Kingdom of Bahrain Become an Iranian Pearl Harbor?

The headquarters of the U.S. Fifth Fleet is in Bahrain. Iran does not need to employ its air force against the U.S. naval facility, but only to topple the pro-American regime of the al-Khalifa family and replace it with a new Bahraini regime backed by the Shi’a majority which seeks the immediate withdrawal of the fleet. Even more worrisome for the U.S. is the fact that the Shi’a protest could easily expand to the neighboring eastern Saudi shore of Al-Ahsaa where most of the population is also Shi'a.