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• Top American commander warns navy is stretched too thin; US has used nearly half of its THAAD interceptors

• Pentagon may face choice between US interests and Israel

• Missile defences consumed faster than they can be replaced; war tests Washington’s ability to fight on multiple fronts

WASHINGTON: A warning from one of America’s top military commanders has exposed a growing dilemma for Washington: The United States may no longer have enough naval forces to simultaneously defend Israel against Iranian missile attacks and protect its own interests across the Middle East.