The United States blacklisted Iran’s state broadcasting authority, Internet-policing agencies and a major electronics producer on Wednesday, an action that widened the American sanctions effort to pressure the Iranian government over its disputed nuclear program and abhorrent human rights record.

The Treasury Department also announced that if a country purchases Iranian oil, it has to deposit the payment into a local bank account and it cannot transfer the funds back to Iran. 

Under American sanctions laws, any United States property held by blacklisted companies and individuals is impounded, and they are prohibited from engaging in any transactions with American citizens. Iran has been hurt by the accumulation of economic sanctions over the nuclear program, and talks on resolving the dispute, which have been stalled for more than six months, are set to resume in Kazakhstan on Feb. 26.