The Pentagon warned Thursday that “there will be consequences” if Bashar Assad unleashes chemical weapons against the Syrian people, amid evidence that the regime is mixing and moving the components for a deadly nerve gas.

“The whole world is watching,” Defense Secretary Leon Panetta said. “There will be consequences if the Assad regime makes a terrible mistake by using these chemical weapons on their own people.”

Panetta addressed the Syrian crisis during a press conference at the Department of Veterans Affairs. Without getting into specific detail, Panetta said the intelligence “raises serious concerns” that the regime is contemplating using chemical weapons.