Damaged radar arrays and other equipment is seen at a Ukrainian military facility outside Mariupol, Ukraine, Feb. 24, 2022.AP Photo/Sergei Grits Naomi Schalit, The Conversation This is a frightening moment. Russia has invaded Ukraine, and certainly those most frightened right now are the people of Ukraine. But violent aggression – a war mounted by a country with vast military resources against a smaller, weaker country – strikes fear in all of us. As a Washington Post headline writer recently wrote: The Ukraine crisis is “5,000 miles away but hitting home.” The Conversation U.S. has spent the …