Iran called U.S. sanctions "economic war" on June 3, and said there could be no talks with the United States until sanctions are lifted, a day after Washington suggested it could hold talks without pre-conditions if Iran changed its behaviour.
President Hassan Rouhani on June 1 suggested Iran may be willing to hold talks if the United States showed it respect, but said Tehran would not be pressured into negotiations, the semi-official Fars news agency reported.
Iranian Foreign Minister Mohammad Javad Zarif said on May 25 that the U.S. decision to deploy more troops to the Middle East in response to the perceived threat from Iran was "extremely dangerous" for peace.
The U.S. Department of Defense is considering a U.S. military request to send about 5,000 additional troops to the Middle East amid increasing tensions with Iran, two U.S. officials told Reuters on May 22.
Iran has officially stopped some commitments under a 2015 nuclear deal with world powers following an order from its national security council, an informed official in the country's atomic energy body told the ISNA news agency on May 15.