The reopening of the British embassy in Tehran is a startling development which represents a potential turnaround in our history with Iran.
The Foreign Secretary is today expected to announce plans to strengthen diplomatic ties with Iran.
Six young Iranians have been arrested and forced to apologise on state TV after posting a video of them dancing to the song 'Happy'.
Iran has eliminated its stockpile of enriched uranium gas under a nuclear deal with the six world powers, Reuters has reported.
US Secretary of State John Kerry will travel to Vienna this weekend to try to break the deadlock in negotiations over Iran's nuclear programme, a senior Western official told Reuters.
The source, who spoke on condition of anonymity, said: "I can tell you that Kerry will be in Vienna this weekend, probably on Saturday."
However, the official added it was unlikely there would be an agreement signed in the near future, given the disagreements between Iran and western nations over Tehran's nuclear programme.
The UK Foreign Secretary William Hague rejected a claim the government was "softening" its approach to Iran.
Speaking in the parliament, Mr Hague described the UK as "absolutely relentless" in its efforts to defeat terrorism around the world and added: "I can assure you that there is no softening of any of our policies in relation to Iran.
William Hague might have announced the reopening of the British embassy in Tehran today, but the Foreign Office is still advising people against traveling to the Middle Eastern country.
The Foreign Office currently advises "against all but essential travel" to most of the country, and "against all travel" to the eastern parts of Iran near the borders with Afghanistan and Pakistan.
People planning to travel to Iran should check the Foreign Office travel advice regularly and sign up for email alerts on the security situation, the spokesperson said.
The Secretary of State William Hague has issued a statement on the possible reopening of the British embassy in the Iranian capital, Tehran:
– William Hague
Our two primary concerns when considering whether to reopen our embassy in Tehran have been assurance that our staff would be safe and secure, and confidence that they would be able to carry out their functions without hindrance.
There are a range of practical issues that we will need to resolve first.
However it is our intention to reopen the Embassy in Tehran with a small initial presence as soon as these practical arrangements have been made.
William Hague has announced that Britain wants to reopen the British embassy in Iran as the West looks to normalise relations to help ease the crisis in neighbouring Iraq.
The Foreign Secretary told MPs that "circumstances are right" to re-open the British embassy in Tehran.
Mr Hague said he had discussed a number of matters in a meeting yesterday, including the situation in Iraq, with Iranian counterpart Mohammad Javad Zarif.
The UK has had no diplomatic presence in Tehran since a mob ransacked the British embassy in 2011.
Iran's Supreme Leader described Western expectations for his country to curb its missile development as "stupid and idiotic," striking a defiant tone ahead of a fresh round of nuclear talks.
Ayatollah Ali Khamenei called on Iran's Revolutionary Guards to mass produce missiles and said the nuclear negotiations were not the place to discuss Tehran's defence programme.
"They expect us to limit our missile programme while they constantly threaten Iran with military action," Khamenei was quoted as telling the IRNA news agency.
Iran and the United States, France, Germany, Britain, China and Russia will reconvene in Vienna on Tuesday for a new round of nuclear talks.