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Former Trump National Security Advisor John Bolton faces 18 federal charges tied to the alleged mishandling of classified materials, surrendering to authorities Friday.

George Washington University law professor and Fox News contributor Jonathan Turley said the evidence against Bolton appears "very damning."

"This information is classified at the highest levels because this is information that can get people killed," Turley told " Fox & Friends ."

"I mean, this is the type of information that, if it gets out, can reveal sources and methods that represent really threatening consequences for national security."

BOLTON MAY BE IN HOT WATER AS FBI INVESTIGATION EXPANDS BEYOND CONTROVERSIAL BOOK

According to the indictm

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