As part of the agreement, the North Korean military announced that an engineering unit would join Russian forces on the ground in Donetsk Oblast the following month.The secret clause reportedly allowed North Korea to send the first 1,000 of its soldiers to Ukraine to gain military experience. More North Korean troops are expected to be engaged, the source told the WSJ.According to the newspaper, currently, most North Korean soldiers are kept at a safe distance from the front line in Ukraine. They are being shown how the Russian army handles logistics and are gaining a new understanding of drone warfare, the source said.Kyrylo Budanov, head of Ukraine's military intelligence (HUR), said that the first North Korean units were expected to arrive in Kursk Oblast on Oct.