Nov. 24 (UPI) -- North Korea has been upgrading its Yongbyon nuclear facility throughout 2025, underscoring the regime's drive to accelerate its fissile material production capabilities, according to a new report by U.S.-based monitoring website 38 North. "Commercial satellite imagery of North Korea's Yongbyon Nuclear Scientific Research Center from October and November 2025 shows continuation of modernization and expansion efforts throughout the site," the report , published Friday, said. The