North Korean leader Kim Jong Un and top military officials adopted a new “major military action plan” for “frontline” units along the border with South Korea, according to state media on Friday, a move experts said could refer to a change in nuclear weapons policy.

The decision came during a three-day Central Military Commission (CMC) meeting that wrapped up Thursday after discussions about “enhancing” the ability of frontline units to execute orders and “revising the military organizational structure.”

Rodong Sinmunreports on all three days of the meeting were mostly brief and did not specify what the “action plan” entails.