In pictures: Russia's massive wildfires rage on

Images from Russia, where the army has been sent in to help tackle massive wildfires raging in Siberia (all photos here from Krasnoyarsk region).

The wildfires have now spread to about three million hectares (7.4 million acres) - an area roughly the size of Belgium

The Russian authorities have deployed 10 planes and 10 helicopters with firefighting equipment

Some forest protection personnel have been parachuted to the most remote areas

Hundreds of firefighters and emergencies ministry personnel are tackling the fires on the ground

They are trying to prevent the blazes from spreading to populated areas

Greenpeace has described the situation in the affected regions as an "ecological catastrophe"

A state of emergency has been declared across the Irkutsk and Krasnoyarsk regions, two areas of the Republic of Buryatia and one area of the Republic of Sakha (Yakutia)

But many Russians say the authorities are not doing enough, with more than 700,000 people signing a petition calling for tougher action

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