SAO PAULO - The attempt by Brazil's government to participate in the international negotiations over Iran's nuclear program could well be called A Manual for Candidates to a Permanent Membership of the United Nations Security Council. Brazil 's diplomatic efforts with Iran - a country suspected of developing nuclear energy for military purposes - began at a meeting last year between President Barack Obama and Brazilian President Luiz Inácio Lula da Silva during the G8+5 summit in L'Aquila, Italy.