Since the beginning of the invasion of Ukraine, President Zelenskyy has all but begged for NATO and the U.S. to establish a no-fly zone over his country’s airspace to prevent the Russian air force from establishing air dominance over the country.  Thus far, both the U.S. and NATO have declined. We invited retired Air Force Lt Gen David Deptula [a UVA alumnus] to give us his views on whether such a no-fly zone could be established and what it would take in terms of air assets.