Iran, meanwhile, hit out at the United States amid mixed signals from world powers and an apparent new deadlock in efforts to allay Western concerns over Tehran's nuclear programme.
"Tomorrow (Friday) in Brussels there will be a meeting of the three plus three at the level of political directors, hosted by the European Union," said EU foreign policy chief Javier Solana's spokeswoman.
UN Security Council permanent members Britain, China, France, Russia and the United States, plus Germany are leading talks aimed at persuading Iran to curb its nuclear ambitions.
On Wednesday, Iran rejected a proposal for it to send more than 70 percent of its stocks of low-enriched uranium abroad under a deal brokered by the International Atomic Energy Agency (IAEA), the UN nuclear watchdog.
The LEU would have been converted into nuclear fuel and returned to Iran to power a research reactor in Tehran.
The deal aimed to defuse a long-running standoff with the West over Tehran's atomic programme.
Source: http://www.google.com/hostednews/afp/article/ALeqM5iCNQgiEV9wsWzt8_4Ht1Err0yZuA 
