The dispute between Iran and the Western economies has escalated after Tehran warned it will stop oil sales to “some countries.”
Rostam Qasemi, Iran’s oil minister, said the curbs will be implemented soon but did not mention specific countries.
The warning comes just days after the European Union (EU) agreed to stop importing Iranian oil from 1 July.
The US and EU have been trying to target Iran’s oil exports as part of sanctions against it.
“Soon we will cut exporting oil to some countries,” Mr Qasemi was quoted as saying by the state news agency IRNA.