KYIV (Reuters) -Ukrainian President Volodymyr Zelenskiy met Danish Prime Minister Mette Frederiksen in the southern city of Mykolaiv on Monday during a rare visit by a foreign leader to a region close to the war front. Video footage posted online by Zelenskiy’s office showed the president greeting Frederiksen with a handshake on a snowy street before entering a hospital where they met soldiers wounded in Russia’s invasion. “It is important for our warriors to be able to undergo not only physical, but also psychological rehabilitation,” Zelenskiy wrote on the Telegram messaging app. “I am grate…