FILE PHOTO: Republican presidential candidate and former U.S. President Trump holds a campaign rally in Las Vegas

FILE PHOTO: Republican presidential candidate and former U.S. President Donald Trump holds a campaign rally ahead of the Republican caucus in Las Vegas, Jan. 27, 2024.  

WASHINGTON - Former U.S. National Security Adviser John Bolton excoriated former President Donald Trump as an utterly self-interested man who would punish personal enemies and appease adversaries Russia and China in a new edition of his memoir released on Tuesday.

Bolton, who served in Trump's White House in 2018 and 2019, accused the Republican presidential frontrunner of having no political philosophy or coherent policy outlook. If re-elected, Trump could leave the NATO security alliance, curb support to Ukraine despite Russia's 2022 invasion, embolden China to blockade Taiwan and generally pursue isolationism, Bolton warned.