U.S. Vice President Joe Biden urges Turkey to increase sanctions against Iran aimed at forcing Tehran to stop its nuclear activities.<br/> Turkey opposed the latest round of UN sanctions against its fellow Muslim neighbour.<br/> 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.<br/> Sanctions have had an impact on Iran's economy but the West suspects they have not stopped work to develop nuclear weapons.<br/> Tehran insists its nuclear activities are peaceful.<br/> Biden said on Thursday he had no evidence the attack on the British embassy in Tehran was orchestrated by Iranian authorities.<br/> But he did say it was another example of why the country was a "pariah."<br/> Lily Grimes, Reuters
