Update for Russian military operations in Ukraine for May 21, 2022:
1. Ukrainian militants in the Azovstal steel works have unconditionally surrendered numbering between hundreds (current Red Cross count) to thousands according to Russian sources; 2. Mariupol has been secured by Russia since mid to late-April - Ukraine finally admits however that its “combat operations” have fully ended; 3. Russia continues to make progress in the Donbas region - Ukrainian forces are being encircled in Severodonestsk and Lysychansk - the salient around Papasnya is expanding both west and north as part of this major encirclement; 4. Pentagon admits Russia still poses the majority of its combat power - possess a “numerical advantage” over Ukraine - and is making “slow, uneven” progress, but progress nonetheless; 5. Kharkov “offensive” has either stalled or is in the process of being rolled back; 6. US M777 howitzers have been found, tracked, targeted, and destroyed by Russian forces; 7. Additional attempts to send heavy weapons will face similar technical, tactical, strategic, and manpower challenges;