FILE PHOTO: National Security Advisor Bolton listens as U.S. President Trump speaks while meeting with NATO Secretary General Stoltenberg at White House in Washington

FILE PHOTO: National Security Advisor John Bolton adjusts his glasses as U.S. President Donald Trump speaks while meeting with NATO Secretary General Jens Stoltenberg in the Oval Office at the White House in Washington, U.S., April 2, 2019. REUTERS/Joshua Roberts/File Photo

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