In 1943, at the Casablanca Conference, the U.S. and Britain said they would only accept unconditional surrender from Nazi Germany and its allies. This meant no deals, no compromises, and no chance for fascist leaders to stay in power. That clear position kept the Allies united and gave hope to people living under occupation. Today, with Russia’s war against Ukraine, the lesson still matters. If dictators think they can win something through violence or negotiate their way back, wars last longer. But when the world makes it clear that aggression will never be rewarded, unity grows and peace becomes possible. History shows: dictators thrive on doubt. Clear goals can end wars.