Twenty years ago, in the middle of Europe, a beautiful cosmopolitan city was pounded into rubble, men were herded into concentration camps, and hospital patients were taken to a cattle farm where they were slaughtered. Whatever lessons we had learnt from the Nazi Holocaust, we forgot them as we watched Vukovar’s destruction on our television screens and did nothing. Instead of sending soldiers to protect defenceless civilians against the world’s fifth-largest army, we sent Red Cross officials to streamline the ethnic cleansing. Vukovar was martyred in front of our eyes, and the best we could do was to belatedly send…