"Withdrawing from the Treaty on the Non-Proliferation of Nuclear Weapons (commonly known as the NPT) is one of Tehran's options amid the escalation of US sanctions imposed on the Islamic Republic," said Iranian Foreign Minister Mohammad Javad Zarif.
"The Islamic Republic's choices are numerous, and the country's authorities are considering them,… and leaving NPT (nuclear Non-Proliferation Treaty) is one of them", state-run IRIB's website quoted the minister as saying.
He also announced his plan to visit North Korea, as both countries have to stand against the restrictions, introduced by Washington.
The NPT, which entered into force in 1970, and extended indefinitely in 1995, aims to prevent the spread of nuclear weapons and weapons technology, encouraging the peaceful use of nuclear energy and nuclear disarmament.