Mattis on Assad using chemical weapons: 'He's been warned'

Mattis on Assad using chemical weapons: 'He's been warned'

Defense Secretary James MattisJames Norman MattisOvernight Defense: Trump identifies first soldier remains from North Korea | New cyber strategy lets US go on offense | Army chief downplays talk of 'Fort Trump' Pompeo backed continued US support in Yemen war over objections from staff: report Stand with veterans instead of predatory for-profit colleges MORE on Tuesday said Syrian President Bashar Assad has been warned against using chemical weapons on the war-torn country’s last major rebel stronghold, but he declined to say whether the U.S. would take military action if such weapons were used.

“The first time around he lost 17 percent of his pointy nosed Air Force airplanes," Mattis told reporters at the Pentagon, referring to the U.S. strike on a Syrian airfield in April 2017 following a chemical weapons attack by the Assad government on residents in the northern Idlib province.

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"He’s been warned," Mattis added. "And so we'll see if he's wised up,”

The U.S. continues to monitor heightened tensions in Syria's Idlib province, which last week was hit with roughly 30 airstrikes by Russia, a Syrian ally. After the Russian strike, the Trump administration warned Assad against using chemical weapons.

Asked if the U.S. would respond with military force if Assad uses chlorine gas on civilians in Idlib, Mattis replied: “I am not going to give that clarity.”

In addition to the April 2017 U.S. strike on Syria, President TrumpDonald John TrumpGrassley: Dems 'withheld information' on new Kavanaugh allegation Health advocates decry funding transfer over migrant children Groups plan mass walkout in support of Kavanaugh accuser MORE also ordered “precision strikes” against Syria this past April in retaliation for a separate chemical weapons attack by Assad’s forces.

Watergate reporter Bob Woodward's latest book notes that Trump had pushed for Assad to be assassinated in a conversation with Mattis after the April 2017 chemical attack.

Woodward wrote that Trump urged Mattis that the U.S. should “f---ing kill” Assad.

Mattis reportedly went along with the president’s demands during the phone call, but immediately told aides after hanging up that they would take a “much more measured” approach.

Trump has since called the book “fiction,” and said the assassination of Assad was "never even discussed."

Mattis has also denied the account.

Asked Tuesday if Woodward had run his quotes by him before publication, Mattis declined to discuss the matter, saying it was inappropriate to address such issues on the anniversary of 9/11.

“Of all days, this is not a day to discuss politics,” he replied.