(NewsNation) — President Donald Trump and Defense Secretary Pete Hegseth will address hundreds of military leaders Tuesday at a Marine base in Quantico, Virginia, in an unprecedented gathering.

NewsNation will stream the remarks from this story when they begin at 8:15 a.m. EDT.

Little is known about why the last-minute meeting was called, but some Democrats have raised concerns over its cost and secrecy.

Last week, the Washington Post first reported Hegseth abruptly ordered all the military's top commanders to attend this meeting.

Those summoned reportedly included all senior officers with the rank of brigadier general or above, their Navy equivalent and their top enlisted advisers. That means more than 800 generals and admirals stationed all over the world — and the U.S. president — w

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