Top Brazilian leaders are rejecting an appeal from the United States to back new sanctions against Iran and its nuclear program.
Brazilian Foreign Minister Celso Amorim said Wednesday that Brazil will not, in his words, "bow down" to international pressure.
Amorim spoke during a news conference with U.S. Secretary of State Hillary Clinton, who warned that Iran will not negotiate in "good faith" without new sanctions.
Clinton also met with Brazilian President Luiz Inacio Lula da Silva. Prior to their meeting, the Brazilian leader warned against "pushing" Iran into a corner when there is still a chance for negotiations to work.
European Union and U.S. officials gathering at an International Atomic Energy Agency board meeting in Vienna Wednesday pledged to pursue additional sanctions against Iran.
Western nations suspect Iran of enriching uranium to make nuclear weapons. Iran argues it is only trying to produce fuel for a research reactor.
But U.S. envoy to the IAEA Glyn Davies said Iran has been playing a "cat and mouse" game with the U.N. body.
Brazil is a voting member of the 15-nation U.N. Security Council, but does not have the veto power of the Council's five permanent members -- the United States, Britain, France, Russia and China.