Donald Trump’s revenge arc has begun: John Bolton, the president’s former ... sharply criticized the president in his book, causing outrage from Trump at the time. “The memoir’s reckless ...

Of course, yesterday, President Trump met with Ukraine's President Volodymyr Zelenskyy just after the third anniversary of the Russian invasion of his country and told him... (SOUNDBITE OF ARCHIVED ...

ZELENSKYY: You think... TRUMP: You're gambling with World War III. SIMON: John Bolton joins us now. Mr. Bolton was ambassador to the United Nations during the George W. Bush administration.