International concerns expressed after Brazil's environment minister quit this week show that some groups are fronts for exploiting the Amazon's resources, the country's justice minister said on Thursday. "There are parts of the international community that defend the Amazon as if it was not Brazilian but a territory of humanity," Tarso Genro told reporters in Rio de Janeiro. "This is a front for economic interests in the Amazon as a global reserve for big multinationals and for other countries to have control over Brazil's territory," he said.