Vaclav Klaus, president of the Czech Republic, was recently in Washington to meet with President Bush and release his new book, "On the Road to Democracy." When the Berlin Wall fell in 1989 and the Velvet Revolution came to Czechoslovakia, Mr. Klaus became finance minister in the new democracy. He became prime minister in 1992, and later president. His market principles replaced communism with freedom and choice; he liberated prices and foreign trade, deregulated markets and privatized state ownership of assets. Communism was dismantled and prosperity came to his country. But now President Klaus sees an unsettling new challenge: the...