Russian President Vladimir Putin received North Korea's top diplomat at the Kremlin on October 27 as Russian forces continued their push in eastern Ukraine, penetrating a key city amid fierce fighting. North Korean media said Foreign Minister Choe Son Hui discussed "many future projects to constantly strengthen and develop" the bilateral relationship while also passing on leader Kim Jong Un's "brotherly regard" to Putin. No further details were given. North Korea has become a crucial backer of Russia’s nearly four-year invasion of Ukraine,…