False claims that Iran is developing nuclear weapons, like the false claim that Saddam Hussein had weapons of mass destruction, can be used to legitimize an attack on Iran.
House quietly passed resolution that suggests using force against Iran:
Resolved, That the House of Representatives declares it is the policy of the United States—(1) that a nuclear Islamic Republic of Iran is not acceptable;
(2) that Iran must not be able to obtain a nuclear weapon under any circumstances or conditions;
(3) to use all means necessary to prevent Iran from obtaining a nuclear weapon; and
(4) to recognize and support the freedom of action of partners and allies, including Israel, to prevent Iran from obtaining a nuclear weapon.