Wagner chief's jet crashes near Tver, Ukrainians control Robotyne, Moscow City hit by drones. What happened on the front line on August 23?

In our today's overview:
· Wagner PMC chief Yevgeny Prigozhin's private jet crashed near Tver, with Prigozhin listed among the passengers.
· A Russian Mi-8 helicopter landed in Ukraine, by mistake or as part of a special ops mission.
· Ukrainian troops are advancing from fully captured Robotyne to Novoprokopivka.
· The West is criticizing the distribution of Ukrainian forces in the counteroffensive.
· Lawrence Freedman, Emeritus Professor of War Studies, urges to refrain from hasty assessment of the Ukrainian campaign.
· Another drone strike on the Russian capital: Moscow City got hit again.
· On the Crimean Peninsula, an S-400 missile launcher was hit.
· Ukraine is testing the Marichka underwater drone with a range of 1,000 kilometers.
Losses
An Embraer Legacy 600 private jet, which belonged to the head of the Wagner PMC Yevgeny Prigozhin, crashed in Russia's Tver Region. Official reports suggest the jet was carrying ten passengers and crew members, including Prigozhin himself. There were no survivors. Several Telegram channels also placed Dmitry “Wagner” Utkin, Wagner co-founder whose call sign inspired the company’s name, among the passengers. In the video of the crash, many noticed the condensation trail of an air defense missile, and the images of the debris presumably feature traces of fragmentation, suggesting that the jet may have been shot down with an air defense weapon.
Telegram channels linked to the Wagner PMC almost immediately started posting eulogies on the passing of “the national hero”. In turn, Fighterbomber, a channel with ties to the Russian Aerospace Forces, reminded that exactly two months before, on June 23, Prigozhin started a mutiny that involved downing six helicopters and an Il-22M plane. Sabotage Assault Reconnaissance Group (DShRG) «Rusich», a Russian neo-Nazi paramilitary unit, posted the following: “Let it be a lesson to all of us. You must always finish what you started.”