US and Iran leaders in historic phone call

The leaders of the US and Iran have spoken on the telephone - the first conversation between presidents of the two countries in more than 30 years.

The exchange between Barack Obama and Hassan Rouhani could reflect a major step in resolving global concerns over Tehran's disputed nuclear programme.

Obama said he had a constructive conversation, adding: "While there will surely be important obstacles to moving forward and success is by no means guaranteed, I believe we can reach a comprehensive solution."

The fact it had been so long since American and Iranian presidents had spoken to each other reflected the "deep mistrust between our countries", the US leader said.

But it also indicated the opportunity for moving forward, he went on. "I do believe there is a basis for a resolution," he said.

Both leaders will now direct their teams to work quickly to find an agreement after the first direct verbal communication between the nations' presidents since the 1979 Islamic revolution.

Earlier, Rouhani said he hoped talks with the US and other world powers over its nuclear programme will lead to results in "a short period of time".

He said Iran would present its plan for a resolution to the nuclear issue at discussions with the six countries scheduled for Geneva on October 15 and 16.

The six are the five permanent UN Security Council members - Britain, China, France, the United States and Russia - and Germany, known as P5+1.

Iran has insisted its nuclear programme is a peaceful attempt to generate electricity but America and its allies including Israel have long demanded a halt to Tehran's uranium enrichment, fearing it could secretly build nuclear warheads.

Uranium enriched to low levels can be used as fuel for nuclear energy but at higher levels it can be used to make a nuclear weapon.

Rouhani vowed his country would not build a nuclear bomb, adding his government would be transparent and had the backing of authorities at home to handle the nuclear issue.

And earlier this week, he said he would like to see a deal with world powers in three to six months.

In his latest comments, he said: "We say explicitly that we will be transparent; we say explicitly that we will not build a bomb. Through the P5+1 we want to provide even more assurances."

He added: "I think that any result this government reaches, it will have the support of other powers (power centres) in Iran. On the nuclear issue, the government has total discretion."