WASHINGTON – The White House and its allies are weighing military options to secure Syria’s chemical and biological weapons, after U.S. intelligence reports show the Syrian regime may be readying those weapons and may be desperate enough to use them, U.S. officials said Monday.

President Barack Obama, in a speech at the National Defense University on Monday, pointedly warned Syrian President Bashar Assad not to use the weapons.

“Today I want to make it absolutely clear to Assad and those under his command: The world is watching,” Obama said. “The use of chemical weapons is and would be totally unacceptable. And if you make the tragic mistake of using these weapons, there will be consequences and you will be held accountable.”