North Korean Troops in Russia Taken off Front Lines

North Korean soldiers who joined their Russian allies in battle against Ukrainian forces have been pulled off the front lines after suffering heavy causalities, according to Ukrainian and U.S.officials.

The North Korean troops, sent to bolster Russian forces trying to push back a Ukrainian offensive inside Russia’s borders, have not been seen at the front for about two weeks, the officials said after requesting anonymity to discuss sensitive military and intelligence matters.The arrival of around 11,000 North Korean troops in Russia in November caused alarm in Ukraine and among its allies in the West, who feared their deployment signaled a significant escalation in the nearly three-year-old war.But in just three months, the North Korean ranks have diminished by half, according to Gen.

Oleksandr Syrsky, Ukraine’s top military commander.Ukrainian troops who have fought against the North Koreans have described them as fierce warriors.But disorganization in their ranks and a lack of cohesion with Russian units have quickly driven up casualties, a Ukrainian official said.

Since arriving on the battlefield, the North Korean soldiers have been left to fend for themselves, advancing with few armored vehicles and rarely pausing to regroup or fall back, according to Ukrainian officials and frontline troops.Critics of Ukraine’s military leadership criticized last year’s offensive into Russia’s Kursk region as a waste of resources at a time when the military inside Ukraine is faltering in the face of a prolonged Russian attack.But President Volodymyr Zelensky of Ukraine has insisted on holding the territory for as long as possible, as a bargaining chip in future peace negotiations.The longer Ukrainians troops hold Kursk, the more embarrassing it becomes for Russia’s president, Vladimir V.

Putin.Though Mr.

Putin has vowed to expel the Ukrainian forces, he has been hesitant to divert troops from the main Russian operations in eastern Ukraine, in part to similarl...