BRASILIA/PORTO VELHO, Brazil - Brazilian warplanes are dumping water on the burning forest in the Amazon state of Rondonia, responding to a global outcry over the destruction of the world's largest tropical rain forest.

As of Sunday, President Jair Bolsonaro had authorized military operations in seven states to combat raging fires in the Amazon, responding to requests for assistance from their local governments, a spokeswoman for his office said.

Reuters accompanied a firefighting brigade near the state capital of Porto Velho, where there were areas larger than football fields that had been charred, but active fires were contained to small areas of individual trees.

The dozen or so yellow clad firefighters from environmental enforcement agency Ibama easily cleared brush from around a burning stump with a leaf blower, doused it with jets connected to water packs mounted on their backs and covered it in earth.

A video posted by the Defense Ministry on Saturday evening showed a military plane pumping thousands of liters (thousands of gallons) of water out of two giant jets as it passed through clouds of smoke close to the forest canopy.

The response comes as leaders of countries in the Group of Seven (G7) nations currently meeting in France expressed grave concerns over the fires.

French President Emmanuel Macron on Sunday said the G7 was nearing a deal to provide "technical and financial help" to countries affected by the Amazon fires.

Nearly 80,000 fires have been registered across Brazil through Aug 24, the highest since at least 2013, according to space research agency INPE.

Bolsonaro announced the military would be sent in on Friday after several days of criticism from the public and world leaders that Brazil's government was not doing anything to fight the fires.

He also said on Twitter he had accepted Israeli Prime Minister Benjamin Netanyahu's offer of a plane and specialized support for the firefighting operations, following a call between the two leaders.