The tension in the publicly televised meeting eased after the leaders unanimously agreed to a vague resolution that says no foreign military force should be allowed to threaten the sovereignty of a South American nation. But the tone of the criticism and the apparent unease about U.S. American motives during the seven-hour meeting underscore the hurdles President Obama faces in trying to improve relations with countries that have distanced themselves from Washington in the past decade. Luiz Inácio Lula da Silva, president of regional power Brazil, said Obama should explain his administration's objectives, while the leaders of Ecuador and Venezuela warned that an expanded U.S. presence threatens their security. "You are not going to be able to control the Americans," said Ecuadoran President Rafael Correa, locking eyes with Colombian President Álvaro Uribe. "This constitutes a grave danger for peace in Latin America." Read more here. Semana International delivers news about Colombia in English. Find more in our home.