A former Iranian nuclear negotiator running for president used his first television appearance of the campaign to reject accusations he had been too soft in talks with world powers.
The most prominent moderate candidate in an election dominated by hardliners, cleric Hassan Rohani, nuclear negotiator from 2003 to 2005, oversaw an agreement to suspend Iran's fledgling uranium enrichment-related activities, reports Reuters.
Iran has since stepped up its nuclear program which many countries, particularly in the West, fear is aimed at acquiring a weapons capability, something Tehran strongly denies.
Hardliners see the nuclear program as a matter of national pride and any concession to outside pressure an affront to Iran's sovereign rights. The current nuclear negotiator, Saeed Jalili, is campaigning for president on his record of giving no ground in talks.
Western powers are watching the June 14 election to see whether President Mahmoud Ahmadinejad's