AP report.

The U.S. has ruled out a military strike against Iran's nuclear program any time soon, hoping instead negotiations and United Nations sanctions will prevent the Middle East nation from developing nuclear weapons, a top U.S. defense department official said Wednesday.

"Military force is an option of last resort," Undersecretary of Defense for Policy Michele Flournoy said during a press briefing in Singapore. "It's off the table in the near term."

Wall Street Journal article.

The Israeli security establishment is divided over whether it needs Washington's blessing if Israel decides to attack Iran, Israeli officials say, as the U.S. campaign for sanctions drags on and Tehran steadily develops greater nuclear capability.

From Wired's Danger Room.

Does this represent a shift in American policy towards Israel? Some signal that the U.S. would stop an Israeli first strike at the final moment? Probably not. I'd guess this is Mullen trying not to wade further into treacherous waters. But it was interesting to hear America's top military officer decline to knock down the idea that U.S. troops might fire on America's closest ally in the Middle East.

BBC report.

Turkey has offered to mediate between Iran and the West in the dispute over Iran's nuclear programme.

The Turkish foreign minister, Ahmet Davutoglu, announced the offer after talks with his Iranian counterpart Manouchehr Mottaki.

BBC report.

Iran's Supreme Leader Ayatollah Ali Khamenei has labelled the US an "atomic criminal" at a conference on nuclear disarmament in Tehran.

He also said that the use of nuclear weapons was prohibited by religion.

BBC report.

Mohammad Khatami was expected to attend a nuclear disarmament conference in Japan, but his aides say he was banned from travelling.

Organisers of the meeting in Hiroshima have confirmed that he cancelled his appearance at the last minute.

Times report.

According to one report the Pentagon is moving hundreds of bunker-buster bombs to Diego Garcia in the Indian Ocean. The latest version of the weapon, known as the Massive Ordnance Penetrator, is said to weigh 15 tonnes and be capable of burrowing through 200ft of reinforced concrete before exploding.

[...]

It was unclear yesterday who was behind the leak of the Gates memo but the vehemence of the White House response suggests that senior Pentagon figures may be responsible. A similar pattern shadowed Mr Obama's decision to deploy 30,000 more troops to Afghanistan last year.

Reuters report.

The nation's top military officer said on Sunday that military options existed to try to prevent Iran from getting a nuclear weapon but that diplomatic efforts were the best way forward now.

"We in the Pentagon, we plan for contingencies all the time and certainly there are options which exist" for dealing with the Iran nuclear threat militarily, Admiral Mike Mullen, chairman of the Joint Chiefs of Staff, told a forum at Columbia University in New York.

New York Times report.

Defense Secretary Robert M. Gates has warned in a secret three-page memorandum to top White House officials that the United States does not have an effective long-range policy for dealing with Iran's steady progress toward nuclear capability, according to government officials familiar with the document.

Several officials said the highly classified analysis, written in January to President Obama's national security adviser, Gen. James L. Jones, came in the midst of an intensifying effort inside the Pentagon, the White House and the intelligence agencies to develop new options for Mr. Obama. They include a set of military alternatives, still under development, to be considered should diplomacy and sanctions fail to force Iran to change course.

Laura Rozen on Politico.

The White House is confirming that President Barack Obama received a letter from Iranian President Mahmoud Ahmadinejad last month.

"Yes, President Ahmadinejad sent a letter to the President in March," National Security Council spokesman Michael Hammer told POLITICO Saturday. "We are not going to get into details on the content of the correspondence at this time."

AFP report.

A son of influential Iranian cleric and ex-president Akbar Hashemi Rafsanjani faces arrest on return from abroad, Tehran's prosecutor said in a newspaper report on Saturday.

BBC report.

As pressure grows on Iran over its nuclear programme, there is evidence that behind the scenes, the United States has stepped up its push to isolate Tehran economically.

[...]

William Burns, US Under-Secretary of State, told a Congressional committee: "What we've been doing is to try to use every lever that we already have at our disposal to encourage foreign companies, foreign entities to cut their ties with the Iranian economy."

"The squeeze is on," said Kate Dorian, Dubai bureau chief for the energy analysts Platts. "Very few people are willing to deal with Iran directly."

Guardian leading article. The article referred to is here.

Two analysts at the Federation of American Scientists (FAS) have argued that the international community should accept Iran's current counter-offer, which is to have the fuel swap (low-enriched uranium for fuel elements) but keep it on Iranian soil. Ivanka Barzashka and Ivan Oelrich say that in haggling over details we are losing sight of the goal, which would be to make it more difficult, not easier, for Iran to build a nuclear weapon.

[...]

We are back to a familiar game of diplomatic brinkmanship, but one cannot help thinking that if sanity were to break out it would be in a form not too far away from the FAS's version. The gaps are bridgeable. There is, unfortunately, much that could happen in the Middle East to derail that outcome.

Paul Woodward on Mondoweiss.

Here's how President Obama states the nuclear paradox:

The risk of a nuclear confrontation between nations has gone down, but the risk of a nuclear attack has gone up.

Here's how I define it:

Hypothetical nuclear threats provoke more fear than real nuclear threats.

Nowhere is this paradox more evident than in Tel Aviv and Tehran.

Which city is currently in greater jeopardy of nuclear annihilation? Tehran.

Which city's residents are repeatedly being told by their political leaders they should be afraid of nuclear annihilation? Tel Aviv's.

ABC report.

Malaysia's Petronas has stopped supplying gasoline to Iran, a company spokesman said on Thursday, as the threat of U.S. sanctions on oil firms with supply ties to the Islamic Republic looms large.

Iran is the world's fifth biggest crude oil exporter but U.S. sanctions mean it has suffered from lack of investment in refineries, forcing the OPEC member to import some 40 percent of its gasoline needs.

Malaysia's state oil firm has stopped supplying gasoline to Iran since the middle of March, the Petronas spokesman told Reuters.

Reuters report.

State-run Chinaoil has sold two gasoline cargoes for April delivery to Iran, industry sources said on Wednesday, stepping into a void left by fuel suppliers halting shipments under threat of U.S. sanctions.