By Jarrett Renshaw RZESZOW, Poland (Reuters) – U.S. President Joe Biden on Friday got a firsthand look at international efforts to help some of the millions of Ukrainian war refugees in Poland, and spoke to American troops bolstering NATO’s eastern flank. Biden shared a meal with soldiers from the U.S. Army’s 82nd Airborne Division stationed in the area of Rzeszow airport, and spoke about the high stakes of the Russian invasion of Ukraine. “You are in the midst of a fight between democracies and oligarchs,” Biden said, referring to rich Russians who have faced Western sanctions since the war s…