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Hillary Clinton unloaded on Donald Trump during a foreign policy address in San Diego, saying the presumptive GOP nominee's ideas are "dangerously incoherent" and would make America weaker.

"Donald Trump's ideas aren't just different, they are dangerously incoherent," Clinton said. "They're not even really ideas; just a series of bizarre rants, personal feuds and outright lies."

Clinton said the billionaire businessman is "temperamentally unfit to hold an office that requires knowledge, stability and immense responsibility."

"This is not someone who should ever have the nuclear codes, because it's not hard to imagine Donald Trump leading us into a war just because somebody got under his very thin skin."

She said that Trump is not somebody to entrust with the security of the nation's children and grandchildren, saying he's gone on the record saying that more countries should have nuclear weapons, including Saudi Arabia, and threatened to abandon NATO allies.

Trump tweeted some responses during the speech.

Watch a clip of the speech above.

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