CLEVELAND — Donald Trump is competing with his own convention as he previews his Thursday night speech accepting the Republican nomination for president.

Trump tells Fox News Channel that the speech will be “relatively long” and will touch on national security and domestic policy.

The interview on Fox’s “The O’Reilly Factor” began as the mother of a State Department employee killed in Benghazi, Libya, was speaking on the Republican National Convention stage.

Trump says his convention speech will discuss a “major, major” tax cut, immigration, ditching burdensome regulations and taking care of veterans.

Trump also criticized Ohio Gov. John Kasich, who’s skipping the convention and hasn’t endorsed Trump.

Trump says Kasich should have attended “from the standpoint of honor.”