Rio de Janeiro — In a rare move, Brazil is providing armed back-up to indigenous people protecting the world’s most threatened tribe from illegal loggers, a decision that campaigners lauded as a “landmark” in efforts to halt deforestation in the Amazon. Officials moved in to the Brazilian rainforest after a group of from the Guajajara tribe, who call themselves The Guardians of the Amazon, seized a logging gang and burnt their truck, rights group Survival International said. A soldier stands guard in front of a truck loaded with logs that were illegally cut from the Amazon rain forest. …”That was a landmark moment, I would say, because The Guardians hardly ever receive support,” Sarah Shenker told the Thomson Reuters Foundation by phone.