Hillary Clinton to Go After Donald Trump's 'Dangerous' Policy Proposals in National Security Speech

SAN DIEGO -- Hillary Clinton is expected to lay into Donald Trump –– further outlining why she believes he is “fundamentally unfit” to be commander-in-chief -– during a national security address Thursday in San Diego, according to a preview of her remarks released by the campaign.

The speech -- her first on national security since Trump became the presumptive Republican presidential nominee -- kicks off Clinton’s 5-day swing throughout California ahead of the state's tighter-than-expected June 7 primary.

But Clinton will not mention her Democratic opponent Bernie Sanders.

Instead, an aide to Clinton tells ABC News she plans to use these remarks to criticize the man she’ll likely run against in the general election for his "dangerous" foreign policy proposals and for his "incessant trash-talking of America."

"Clinton will speak extensively about the reasons why Donald Trump is unqualified to be our commander-in-chief," Jake Sullivan, Clinton’s senior policy adviser, said in a statement.

Specifically, he said, she will call out the real estate mogul-turned-reality TV star-turned-presidential candidate for his position on nuclear weapons and war crimes, for saying the United States should get out of NATO, and for his proposal to ban Muslims from entering the country.

"But," Sullivan added, "Clinton's critique will go beyond specific policies and she'll make clear that the choice in this election goes beyond partisanship: Donald Trump is unlike any presidential nominee we've seen in modern times and he is fundamentally unfit for the job."

Clinton is also expected to highlight her own experience as secretary of state to show a contrast between herself and the Republican presidential candidate.

In recent weeks, Clinton has taken a more aggressive stance against Trump, taking aim at his personality, his foreign policy ideas and his business ventures.

While campaigning in New Jersey on Wednesday, she called him a fraud and accused him of "trying to scam America." Clinton was referring to Trump University, the now-defunct seminar program that is currently the subject of litigation in New York and California, with the accusation being that it cheated participants out of cash.

Trump has brushed off the ramifications of the case and has repeatedly said he will win in court.