The attacks come at a critical time for Iran's clerical rulers, who faced months of anti-government protests sparked by the death of a young Iranian woman in the custody of the morality police who enforce strict dress codes.
Sanctions were imposed on several military companies as well as ministers and lawmakers from various European countries, both at a national level and in the European Parliament.
Bloomberg News reported that inspectors of the International Atomic Energy Agency (IAEA) in Iran last week found uranium enriched to 84-percent purity.
Iran and China on Tuesday signed 20 cooperation agreements in different fields during President Ebrahim Raisi's three-day visit to Beijing, his office said.
On Sunday, the foreign minister of Saudi Arabia declared that if Iran were to develop a working nuclear weapon, all bets would be out and the Gulf nations would take security measures.
