Lech Wałęsa has called for Poland to unite with Germany to form one European state, despite the bloody history between the two countries. The Nobel Peace Prize winner and former Polish president, whose Solidarity trade union played a key role in bringing an end to the Cold War, said the world had changed and needed new ways of organizing itself. “We need to expand economic and defense cooperation and other structures to create one state from Poland and Germany in Europe,” he said. Speaking to Russia’s Itar-Tass news agency, Mr. Wałęsa, 69, said national boundaries were not as relevant as...