After the joint announcement of Iran, Turkey and Brazil, Iran's permanent ambassador to the International Atomic Energy Agency announced the country's readiness to submit the letter to the agency. In a meeting with the agency's chief Yukiya Amano on Monday, Iran will hand over the letter.
1920 GMT: Diplomatic Games. Back from a break to find that the US has denied a visa to Iran's Deputy Foreign Minister Mohammad Mehdi Akhondzadeh Basti.
Basti was planning to attend the month-long conference on the Nuclear Non-Proliferation Treaty at the United Nations.
In a more positive development, the European Union's foreign policy director, Catherine Ashton, claims that Iran has signalled that it is ready to speak to representatives of the "5+1" powers (US, UK, France, Germany, Russia, China) about uranium enrichment.
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1540 GMT: Friday Rest, Indeed. A quiet day on the news front. Press TV now has the packaged summary of Ayatollah Jannati's Friday Prayer (much politer than our assessment at 1235 GMT), focusing on his portrayal of the Iran-Brazil-Turkey agreement on procedure over uranium enrichment: "This move by Iran is another step towards building trust and leaves no room for Western excuses."
The mothers of the three detained US citizens, arrested for crossing the Iran-Iraq border last summer, have met their children for a second time.
I'm off to chat with the Islamic Student Society at the University of Birmingham about US-Iran relations.
1240 GMT: Detainee Connections? Borzou Daragahi of the Los Angeles Times notes Iraq's release of two Iranians --- one arrested seven years ago and one in 2007 by US troops --- and speculates that there is a link to Tehran's permission for the mothers of 3 detained Americans to visit their children.
1235 GMT: Your Friday Prayer Summary. It's Ayatollah Ahmad Jannati, the head of the Guardian Council, at the podium today, and he's taking the audience on a global tour. The G-15 Summit of non-aligned nations, President Ahmadinejad's speech to the United Nations on nuclear non-proliferation, and the Turkish and Brazilian talks lead to Monday's agreement on a procedure over uranium enrichment: it's a buffet of international triumph.
But that's not to say that Jannati stayed away from the domestic scene. Here is a summary: Chastity good. Hijab very good. University students, take notice. Thank you and have a lovely day (if you're chaste and wearing the veil).
1225 GMT: Panahi Bail Hearing Tomorrow. The wife and lawyer of detained film director Jafar Panahi have told media that his case will be heard in Revolutionary Court on Saturday. Lawyer Farideh Gheirat said, "Based on the promise I got (from the judiciary), I am hopeful that he will be released until the date set for his trial."
Panahi was arrested in early March and has recently gone on hunger strike to protest his treatment in prison.
0920 GMT: Economy Watch. Iran Labor Report surveys layoffs, unpaid wages, and problems for factories in Tabriz, including the threat to close one of the largest industries in the city, Tractors Manufacturing.
0915 GMT: The Afghanistan Protests. Demonstrations continue in Afghanistan over the jailing of Afghans in Iranian jails: the latest was outside the Iranian Consulate in Herat, with chants of "Marg bar Khamenei" (Death to Khamenei).
0910 GMT: Cyber-Wars. Revolutionary Guard commander Ebrahim Jabbari announces, "We have the second biggest cyber army of the world."
0755 GMT: Fashion Warning. Mohammad Hosseini, the Minister of Culture and Islamic Guidance, has warned that women are not appropriately dressed in Iranian films.
0750 GMT: Conspiracy Theory of Day.Hojatoleslam Ruhollah Hosseinian, an Ahmadinejad supporter in Parliament, has "revealed" that, after meeting global financier George Soros, former President Mohammad Khatami anointed Mir Hossein Mousavi for leadership by "putting the green shawl around Mousavi's neck".
0740 GMT: Global Analysis of Day. Ahmadinejad Chief of Staff Esfandiar Rahim-Mashai hands down a lesson in politics at home and abroad. He pronounces that "near to nothing is left over" from Israel, which exists only to serve superpowers in the Middle East". In contrast, Iran is a model where "no one has to be jobless", so "in 15 years millions of people in the world will be at our service".
0625 GMT: Brotherhood, Defence, and Hikers' Moms. A glance at Press TV's "Iran" section this morning is instructive: none of the lead stories are about internal matters. Instead, there is the platform of a meeting with the Speaker of Kuwait's Parliament for President Ahmadinejad to declare,
"The age of threat is over and (the) future belongs to brotherly talks."
The commander of Iran's ground forces, General Ahmad-Reza Pourdastan responds to the age of non-threat with the announcement that Iran will deploy remote-controlled weapons on its border areas: ""So if any enemy enters these areas it will face either soldiers or weaponry that act as soldiers and will target them."
Elsewhere, it is Iranian goodwill that dominates, with features on Thursday's hotel visit by the mothers of three detained US citizens with their children, arrested for crossing the Iraq-Iran border last summer.
0555 GMT: So to the end of a week with both the artificial drama of the Iran-Brazil-Turkey agreement on uranium enrichment and the US-led response of a sanctions resolution introduced to the United Nations Security Council and the escalating drama of a Government, struggling to maintain legitimacy, stepping up intimidation and detentions.
We've posted a separate entry with four incisive and very different perspectives on the uranium dispute.
And now to watch for developments on the domestic front....