John Bolton, whose home and office were searched by federal agents on Friday, has been one of the most vocal critics of President Donald Trump since serving as a national security adviser in Trump's first administration.

What You Need To Know

John Bolton, the former Trump national security adviser, whose home and office are being searched by federal agents, has been a vocal critic of the Republican president

Bolton wrote a book in 2020 portraying Donald Trump as uninformed about foreign policy

Bolton's tenure in the Trump administration was marked by clashes over issues like North Korea and Iran

Bolton has continued to criticize Trump, recently commenting on Trump's statements about Ukraine and Russia

After serving in the White House, Bolton wrote a scathing book that portrayed Trump

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