Description:U.S. Vice President Joe Biden urges Turkey to increase sanctions against Iran aimed at forcing Tehran to stop its nuclear activities. Turkey opposed the latest round of UN sanctions against its fellow Muslim neighbour. The European Union added 180 people and entities to its Iran sanctions list on Thursday and laid out plans for a possible embargo of Iranian oil. Sanctions have had an impact on Iran's economy but the West suspects they have not stopped work to develop nuclear weapons.(0:58)