US National Weather Service claims smoke haze from deadly inferno has crossed the Pacific.
Apartment block ravaged by dangerous fire near Vladivostok amid suspicions of a mining rig set up by resident.
At least three are dangerously close to population centres in Irkutsk region.
Wildfires ablaze early in year due to lack of snow, posing threat to railway in Russian Far East.
Distressing images from infernos that left 645 people without homes, and dozens injured.
Hero boy Alexander, 11 who was rescuing other children dies from severe burns.
Fires have wreaked havoc this summer with Yakutia and the Yamalo-Nenets autonomous the latest to be hard hit.
He spoke out as Premier Dmitry Medvedev was in Siberia on a trip substantially aimed at leading efforts to combat the serious forest fires.
Desperate rescue efforts failed to pull the men to safety after the earlier rescue of eight subcontractors.