Putin arrives in North Korea as war in Ukraine redefines ties with Kim
Among other things, the conflict has given Pyongyang a rare opportunity to evaluate the performance of its missiles in combat and potentially refine their designs. North Korea would also welcome greater access to sophisticated Russian military technology, including its extensive knowledge of satellites. Two months after Kim's visit to Russia last year, North Korea put its first military reconnaissance satellite into orbit, a launch that South Korean officials say was aided by technological assistance from Moscow. Russia, which has the world's largest arsenal of nuclear weapons and one of the most sophisticated submarine programs, has a number of other technologies…