Iran displays new centrifuge for nuclear work
Reuters / Parisa Hafezi

President Mahmoud Ahmadinejad, taunting the United States for trying to halt Iran's nuclear program, unveiled a new centrifuge on Friday which officials said would enrich uranium much faster then existing models.

President Barack Obama, who is seeking tougher U.N. sanctions against Tehran, acknowledged that such measures would not necessarily work, but said sustained world pressure could over time prompt Iran to revise its nuclear calculations.

Ahmadinejad, in a speech to mark Iran's annual nuclear day, called the nuclear arms reduction treaty that Obama signed with Russia this week "a masquerade" hiding his true intentions.

"We consider nuclear weapons to be against humanity," he said.

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