From the article:
Still, the armys drill reflects thinking in Brazil that foreign powers covet the Amazon, about 60 percent of which is in the country. Fifty percent of Brazilians believe their country will be invaded in an effort to grab the Amazons resources, according to 2011 opinion survey by a government statistics agency. The poll, which interviewed 3,796 people, had a margin of sampling error of plus or minus 5 percentage points.
Brazil expanded its military presence in the Amazon during the dictatorship that held power from 1964 to 1985, when generals offered incentives to settlers to occupy the frontier. While some political analysts contend that potential invasions belong in the realm of conspiracy theories, others delve into history to show that foreign designs on the Amazon are not so far-fetched.
This same military, which overthrew the government and seized control of the country, and imprisoned and tortured the current President of Brazil, Dilma Rousseff, relentlessly, is still very powerful. Brazil's legislature is still very much dominated by the right-wing establishment. The military dictatorship was also supported by the U.S.
[center]

Dilma Rousseff, sitting during a trial.
Notice the military judges are hiding their faces.[/center]
I would suspect the next step would be to form campaigns to attack Dilma Rousseff from the U.S. right wing now that she has been deeply harmed by the Brazilian right wing. That would just about take the cake, wouldn't it? US right-wing dirt-ball imbeciles going after her, too.