The man who killed Usama bin Laden said President Trump effectively "hit the bully in the face" when he ordered the bombing of a Syrian airfield.

Retired Navy SEAL Rob O'Neill said the move, in response to Syrian President Bashar al-Assad allegedly ordering the gassing of civilians, also raised American troop morale.

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"[It's] good for them because now they have purpose," he said. "They know we have the ability to deter and you can stop force with force."

O'Neill said Trump hit Assad "in the face" by wrecking the airfield suspected to be the launching point for the gas attack against people in Idlib province.

He said America's allies in Europe are happy that we took action against the Russian-backed leader, noting that "bullies" like the Kremlin don't have very many allies.

O'Neill said such a forceful strike against the Assad regime may make the authoritarian back-off when it comes to taking aggressive actions against domestic opponents.

He added that the bombing may make enemies like North Korean dictator Kim Jong-Un think twice before continuing to instigate conflict with the United States.

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