”1,200 casualties per day”... Russia relies on support from ”overseas troops” to continue war

Amid reports of the "sending of North Korean troops to Russia," some are of the opinion that "Russia has no choice but to rely on soldiers and labor from overseas in order to continue the Ukrainian war."
The British daily newspaper The Guardian reported on the 20th (local time) that "Russia is increasingly turning its attention overseas to gather not only weapons, equipment and other assistance, but also soldiers and workers to support the war.
North Korea recently decided to send a large number of special forces to the Ukrainian war in support of Russia, and some of the troops have already been confirmed to be moving to Russia.
On the 18th, South Korea's National Intelligence Service said, "North Korea was observed transporting North Korean special forces to Russia on a Russian Navy transport ship between the 8th and 13th of this month."
"We have confirmed that the war has begun," he said. He also predicted, "1,500 troops have already been transported to Vladivostok in Russia as the first group, and a second group will likely be transported there soon."
Some speculate that "due to the difficulties in communicating with the Russian military, the North Korean military will likely support the Russian military and learn about drone warfare rather than fighting."
The Guardian reported that "North Korea's decision to send its most elite special forces is a sign of political credibility rather than a way to put them to use."
"It is highly likely that Russia's reliance on foreign forces is due to a lack of domestic military forces caused by war and a declining population," he explained. According to The Guardian,
It is estimated that around one million military personnel have been killed or wounded in the Ukraine war, with Russian military casualties increasing to "an average of more than 1,200 per day" last month.
Russia's military strength is said to be four times that of Ukraine's, but the Russian military has been rapidly depleted by the "meat grinder" war, and conscription is not politically justified.
It's costly: by some estimates, seven times more Russians have died since Russia invaded Ukraine than the number of Soviet troops killed in Afghanistan in a decade.