President Donald Trump may not need Congress to go to war with Iran.

That’s the case his lieutenants have been quietly building as tension between the two nations have escalated.

The key elements involve drawing links between al Qaeda and Iran and casting Iran as a terrorist threat to the U.S. — which is exactly what administration officials have been doing in recent weeks.

That could give Trump the justification he needs to fight Iran under the still-in-effect 2001 use-of-force resolution without congressional approval.