Iranian Foreign Minister Javad Zarif says that it's too early to discuss reopening the US embassy, even though the UK embassy returned to operation today (Sunday).
According to Zarif, the United States' "illogical attitude" towards the Islamic Republic is the main factor holding harming relations between the two countries.
The US embassy in Tehran has been closed since 1979, when a group of students broke inside and held the people they found hostage for 444 days.