The German government yesterday asked the country’s highest court to ban an extreme-right party in the strongest political move so far against neo-Nazis. Officials expect it will take at least a year before the Supreme Court rules whether to approve the ban on the National Democratic Party, or NPD. Only two political parties have been banned in post-war Germany. The successor to the Nazi party was outlawed immediately after World War II, and the Communist party was banned in West Germany in the 1950s. Security officials consider the National Democratic Party a magnet for violent young skinheads because of its anti-foreigner stance and slogans such as “Germany for Germans.”