WASHINGTON: President Donald Trump said Saturday that the US military struck three sites in Iran, directly joining Israel ‘s effort to decapitate the country’s nuclear program in a risky gambit to weaken a longtime foe amid Tehran’s threat of reprisals that could spark a wider regional conflict. The decision to directly involve the US comes after more than a week of strikes by Israel on Iran that have moved to systematically eradicate the country’s air defenses and offensive missile capabilities, while damaging its nuclear enrichment facilities.