Iran has warned countries against supporting the United States’ economic sanctions campaign, saying governments that participate in the restrictions will be treated as enemies.

The warning was issued on Saturday by Mohsen Rezai, head of Iran’s Supreme National Security Council, as Washington intensifies efforts to isolate Tehran economically.

Rezai urged foreign governments not to join what he described as an American economic war against Iran. He said countries that impose or support sanctions against Tehran would face consequences.

He also warned that nations refusing to distance themselves from the US campaign could see their interests targeted by Iran.

The Iranian official claimed that Tehran had so far limited its attacks to military targets and had not targeted American economic interests.

However, he said Iran could respond differently if Washington moved to impose further economic restrictions, pointing to American oil and other economic interests in the region as potential targets.

Rezai said Iran still had several options available in the confrontation and warned that any further escalation by US President Donald Trump could trigger a much stronger response from Tehran.

The United States has been seeking support from other countries for its campaign to put greater economic pressure on Iran, particularly from nations with significant trade or strategic ties with Tehran.

China, one of Iran’s key partners, has criticised the US approach, maintaining that sanctions would not resolve the wider Middle East crisis.

The United Arab Emirates, however, recently announced that it was suspending trade and financial transactions with Iran until further notice.

Iran’s latest warning adds to growing tensions over the economic measures and raises concerns that countries supporting Washington’s sanctions could become involved in the wider confrontation.