Former U.S. ambassador John Bolton says he believes U.S. President Donald Trump was never serious about annexing Canada and ...

Donald Trump’s ex-national security adviser John Bolton on Sunday suggested the president’s threats toward Iran could prove sour for his administration as the U.S. negotiating team heads to another ...

NPR's Michel Martin asks former national security adviser and U.S. Ambassador to the United Nations John Bolton about the potential costs of extending the ceasefire with Iran.