Thick smoke from forest fires has covered cities in Siberia, the Urals, and the Volga region. It would have been possible to cope with the initial stages of the blaze, but regional leaders have tried to extinguish as little as possible.

According to Greenpeace Russia, over 3 million hectares of forest have been consumed by the current blaze (an area approximately the size of Belgium) and 11 million hectares (an area larger than Portugal) have been affected throughout spring and summer.

There have been worse forest fires this century in Russia, in 2003 and 2012, but it looks like those records will be broken this week. Usually, the smoke is blown towards the uninhabited areas in the east and north, whereas this year it is more noticeable as it is traveling westward towards Novosibirsk, Yekaterinburg, Chelyabinsk and Kazan.

The current fires are largely a result of a controversial law. More than 90 percent of the burning forests are within so-called control zones: Areas where regional authorities do not have to put out fires if the cost of the effort to do so exceeds that of the fire damage. This policy was introduced in 2015 when the federal authorities basically re-introduced a Soviet-era practice.

Now governors have the official right not to extinguish fires: A right they are keenly exercising as there is a lack of money and equipment at their disposal. Forests in Russia are plentiful whereas the economy is too weak to put out all the fires.

The authorities estimate the potential damage by calculating the minimum price of processable wood in the area that is burning (and if the wood is deemed unfit for processing, there is no recordable damage). In other words, according to these calculations, fires often cost almost nothing. However, every year, fires destroy 3 times more forest (3 million hectares) than the timber industry (1 million hectares).