Update 2018-05-09: After the announcement of the US President from Tuesday (08 May), to withdraw from the nuclear agreement with Iran and impose economic sanctions, protests are possible nationwide, especially in the capital Tehran.
2018-05-04: In the wake of the upcoming decision of the USA about the nuclear arms deal with Iran on 12 May, the possibility for nationwide protests and demonstration around this date is rising. Especially after the ban of the messenger Telegram tensions between the population and the government as well as western institutions can occur around this date.
Heightened security measures are to be expected, local traffic disruptions are possible. Violent incidents cannot be ruled out. Travellers should avoid the demonstrations as a precaution and follow instructions by authorities.