Iran’s foreign minister Mohammad Javad Zarif:  says the Royal Marine’s seizure of Grace 1 is “piracy”.  Photograph: Manaure Quintero/Reuters

Dramatic images of armed and masked Iranian Revolutionary Guard commandos rappelling from a helicopter on to the deck of a British-flagged oil tanker (...)

Iranian supreme leader Ayatollah Ali Khamenei at a meeting with Iranian judiciary officials in Tehran, Iran, on Wednesday. Photograph: Iran government handout/EPA

The latest round of US sanctions on senior Iranian figures could finish off the remote possibility of talks between Tehran and Washington. Experts a(...)

Counting Iranian Rials as Washington reimposed sanctions on the Islamic republic, triggering a mix of anger, fear and defiance in Tehran. Photograph: Getty Images

Iranian president Hassan Rouhani accuses the US of waging “psychological warfare” against his country due to economic uncertainty driven by the reimpo(...)

US secretary of state John Kerry and Russia’s foreign minister Sergei Lavrov during talks in Vienna on October 23rd on the Syrian civil war. Iran has accepted an invitation to join talks. Photograph: Carlo Allegri/New York Times

The participation of the Iranian foreign minister in Friday’s talks on resolving the Syrian crisis with colleagues from the US, Saudi Arabia, Turkey a(...)

Russia’s foreign minister Sergey Lavrov, and US secretary of state John Kerry,  before a trilateral meeting on Monday in Doha. Photograph: Brendan Smialowski/ pool photo via AP

Pressure for diplomatic resolution of the Syrian conflict appears to be growing as supporters of the government of Bashar al-Assad met in Tehran and S(...)

 The meeting in London takes place in the wake of Lakhdar Brahimi (centre) announcing that he is stepping down as UN envoy for Syria. Photograph: EPA

In a bid to revive the diplomatic option for resolving the Syrian conflict, US secretary of state John Kerry is to meet European and Arab counterparts(...)