President-elect Donald Trump’s onetime national security adviser warns that his former boss returning to the White House will significantly increase the risk of “an international crisis.” John Bolton—who served as Trump’s national security adviser for 17 months from April 2018 to September 2019—dismissed the president-elect’s claims that he is uniquely positioned to resolve international conflicts in Ukraine and Gaza in an interview with The Guardian.

John Bolton, President-elect Donald Trump ’s former national security adviser, said that an international crisis is “much more likely” during the Republican’s second term. Bolton, who served as Trump’s national security adviser from 2018 to 2019,