Brazil and Russia forged a “strategic partnership plan” on agriculture, military cooperation and humanitarian issues, Russian and Brazilian presidents Dmitry Medvedev and Luiz Inacio Lula da Silva said. The two leaders also signed cooperation agreements on international information and communication security, and protection of intellectual property copyright, Xinhua reports. Da Silva also traveled to Iran last weekend in a bid to convince the Western Asian nation to tone down its nuclear ambitions. U.S. Secretary of State Hillary Clinton is worried that Iranian President Mahmoud Ahmadinejad might use the negotiations with Brazil “to stall for time in order to move Iran closer to developing a nuclear weapon,” The New York Times reports. American officials said the U.S. was close to obtaining the backing of the United Nations Security Council for a resolution on imposing sanctions against Iran. Meanwhile, environmentalist Marina Silva is running for Brazil’s presidential election under the Green Party. The former environment minister pledged to promote a clean government and sustainable development, Reuters reports.