Tags: Iran

Iran on Tuesday rejected as "unacceptable" U.S. President Barack Obama's demand that it freeze sensitive nuclear activities for at least 10 years, but said it would continue talks aimed at securing a deal, Iran's semi-official Fars news agency reported.

Israeli Prime Minister Benjamin Netanyahu will escalate his campaign against U.S. President Barack Obama's Iran diplomacy on Tuesday in a speech to Congress whose staging has put unprecedented stress on the two leaders' already strained ties.

The head of the United Nations' nuclear watchdog said on Monday Iran had still not handed over key information to his staff, and his body's investigation into Tehran's atomic program could not continue indefinitely.