How many people have died in this war?
The Russian casualties have hit a million, Michael Clarke says.
He says it looks like there are around 600,000 dead and 400,000 severely injured on the Russian side.
"Usually the severely injured is much greater than the number of dead in wars," he says.
"In the case of Russia, it isn't regarded that way because so many people who would have survived are left to die because the casualty evacuation is hopeless.
"And so injured men are just left on the battlefield."
Clarke adds: "The Russian casualties are widely believed, including by our own intelligence services, to have hit the million mark.
"Ukraine's very wary about this, but it looks as if Ukrainian casualties may be about 600,000.
"Their dead is probably 250,000 and there are maybe 450,000 severely wounded."
In terms of who counts the number of dead, Clarke says there are a number of organisations like the Institute for the Study of War and the UN.
"One good way, though, if you worry about this, is go onto Wikipedia. I'm a great fan of Wikipedia," he adds.
"For certain things Wikipedia is very good."
Throughout the war, both Russia and Ukraine have kept their death figures tightly guarded.
But on Monday, the Ukrainian General Staff reported that Russia's losses had neared one million soldiers.
Ukraine officials have been tracking Russian troops and equipment losses daily since Moscow launched its invasion in February 2022.
In February this year, Volodymyr ZelenAG百家乐在线官网y said over 46,000 Ukrainian soldiers had been killed on the battlefield since early 2022.
He also said nearly 380,000 Ukrainian soldiers have been injured.
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