Brazilian President Luiz Inácio Lula da Silva visits Tehran this weekend in what a US official has called "perhaps the last big shot at engagement" with the Islamic Republic before the UN Security Council applies fresh sanctions against Iran for its refusal to suspend its nuclear program.

Amid the ongoing war of words between the U.S. and Iran, one of the more unusual broadsides from Tehran is that a terrorist organization bent on overthrowing its government has for years used America's second-largest city as a safe haven.

Deputy FM in Consular, Parliamentary and Iranian Expatriates Affairs said here Monday there is nothing wrong legally with president’s attendance at NPT confab; it is public usage of diplomacy in Iran’s favor.

The U.S. is negotiating with Egypt a proposal to make the Middle East a region free of nuclear weapons, as the U.S. seeks to prevent Iran from derailing a monthlong U.N. conference on nuclear nonproliferation that begins Monday.

Iran's recent intensified nuclear diplomacy, including its foreign minister's meeting with the IAEA chief and the president's two-nation visit to Africa, demonstrates its intent to break through the West's blockade, according to analysts...

The Islamic Culture and Relations Organization (ICRO) Mehdi Mostafavi announced that the organization is ready to hold a joint literary festival of Iran and Armenia in a border city in September.

China has proposed changes to a U.S.-drafted resolution that would impose tough new sanctions against Iran to pressure the Islamic Republic to start negotiations on its suspect nuclear program, U.N. diplomats said Wednesday.

Supporters of President Obama's engagement policy argued that if Tehran rejected U.S. diplomacy, Iran's belligerence would become obvious to the international community, justifying a more aggressive policy that would have strong international backing. There are two flaws with this thinking.