Now that the Singapore summit of President Donald Trump and Kim Jong Un is in the rearview mirror, major questions remain, particularly about the part of North Korea’s doomsday arsenal that Pyongyang’s military is most likely to use in a war, one that can potentially kill millions of people, and one for which the U.S. military is woefully unprepared: chemical and biological arms.

Nuclear weapons will continue to be the top concern. But they are far from the only one. Specifically, U.S. forces in the region lack sufficient medical countermeasures, protective gear and technology to identify so-called chem-bio agents, Pentagon insiders say. And the troops are insufficiently trained, manned and equipped for such a fight, according to previously unreported Pentagon audits and Army officials. Only about 1 in 3 of the Army’s special units that deal with doomsday agents is fully prepared, the service confirmed.

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