Biden kicks off White House summit on countering violent extremism

Vice President Joe Biden kicked off a three-day White House summit on countering violent extremism by lauding the U.S. "melting pot" of assimilating immigrants, a model the administration believes Europe needs to emulate more. The summit, which started Tuesday and brings together local officials from across the country and ministers from around the world, follows recent shootings in Copenhagen and Paris that have galvanized Western resolve against such extremist attacks. The White Hous