Washington (AFP) – US presidential hopeful Hillary Clinton tore into her likely election rival Donald Trump Thursday, saying his foreign policy is dangerously incoherent and labeling him unfit for office.

“He is temperamentally unfit to hold an office that requires knowledge, stability and immense responsibility,” said Clinton, cranking up the rhetoric on what is already a deeply acrimonious election. “This is not someone who should ever have the nuclear codes.”