The BRIC nations want the United Nations to rebuke countries that resort to unilateral sanctions not approved by the UN Security Council, Brazilian Foreign Minister Celso Amorim said.
A resolution on that theme, if approved by the UN General Assembly, could contribute to erode the legitimacy of additional sanctions imposed by the United States and other Western powers against Iran's nuclear program.
Amorim said the BRIC group, which includes Brazil, Russia, India, and China, discussed the proposed resolution during a meeting of foreign ministers on September 21 in New York.
"We're beginning to have some political coordination on General Assembly resolutions," the minister, who is in New York to open the UN General Assembly on September 23, told Reuters in an interview.
"In some cases we're even against multilateral sanctions, so for sure unilateral sanctions aren't welcome because they're outside the UN system," he added.
The UN Security Council has extended sanctions against Iran in June for its refusal to halt uranium enrichment, which the Islamic republic says will be used in peaceful generation of electricity but the United States and Western countries fear is for weapons.