The U.N. atomic watchdog said Thursday that Iran has invited it to visit the heavy water production plant at its Arak site on December 8, for the first time since August 2011.

"I can inform the board that we have received an invitation from Iran to visit the Heavy Water Production Plant at Arak on 8 December," International Atomic Energy Agency chief Yuyika Amano said.

U.N.-Arab League peace envoy Lakhdar Brahimi held talks on Monday with United Nations Special Coordinator for Lebanon Derek Plumbly at Beirut's Rafik Hariri International Airport.

The 20-minute meeting was held under maximum security, the state-run National News Agency reported.

Iran and Britain agreed Wednesday to name a charge d'affaires to each other's country within two weeks, following a break in diplomatic ties since 2011, state news agency IRNA reported.

"This agreement was reached at a bilateral meeting between (deputy foreign minister) Mohammad Takht Ravanchi and his British counterpart, Simon Gass," on the sidelines of nuclear negotiations in Geneva, IRNA said.

New York's financial regulator is investigating insurer Lloyds of London for suspected violations of U.S. sanctions forbidding dealings with Iran, a source told Agence France Presse Wednesday.

The state's Department of Financial Services is seeking information on Lloyds' own internal probe into whether it issued insurance contracts for companies trading commodities with Iran.

President Michel Suleiman met on Sunday with newly sworn-in Iranian head of state Hasan Rowhani, and both leaders stressed on the need to find a peaceful solution for the Syrian crisis.

"The Lebanese and Iranian presidents expressed that they are ready to cooperate with other countries in the region to find a peaceful solution for the war in Syria,” the state-run National News Agency revealed.

President Michel Suleiman will participate in the inauguration ceremony of Iran's President-elect Hassan Rowhani next month, As Safir newspaper reported on Wednesday.

The daily said Suleiman will travel to Tehran on August 3 at the head of a small delegation that includes Deputy Premier Samir Moqbel and Caretaker Foreign Minister Adnan Mansour.

Candidates in Iran's June 14 presidential election all agree that rampant inflation is the most pressing problem, but commentators Saturday bemoaned that in a first television debate none proposed real solutions.

Press commentators accepted the complaints of several candidates that the Friday debate's format, which gave little scope for real discussion of issues, had not helped them present their policies.

Interpol said Friday it was not lifting arrest warrants for Iranians suspected of involvement in the 1994 bombing of a Jewish community center in Buenos Aires, despite Tehran's steps to co-operate.

Argentine Foreign Minister Hector Timerman read from a letter announcing the international police organization's decision at a press conference.

Iran on Tuesday spurned a request by the IAEA for access to a military base where Tehran allegedly conducted nuclear weapons research, saying the issue should be addressed in a wider agreement with the U.N. atomic agency.

"Our cooperation with the (International Atomic Energy Agency) will continue in its already established framework of cooperation," foreign ministry spokesman Ramin Mehmanparast told a press conference when asked about Parchin military base near Tehran.

Iranian police have arrested former Tehran prosecutor Saeed Mortazavi, an ally of President Mahmoud Ahmadinejad, who termed the arrest a "very ugly action."

Mortazavi, Tehran's notorious former prosecutor, was suspended in August 2010 along with two other judges over the death in prison of three anti-government protesters in the aftermath of the 2009 presidential election.