Russia's drawn-out efforts to capture Avdiivka show it still can't conduct encirclement, war analysts say

• Russia's tactics in Avdiivka show it still can't pin down Ukraine's troops, analysts said.
• Russia has repeatedly failed to encircle Ukraine's troops in its invasion, they said.
• But Russia still looks set to take the town, with the White House blaming a lack of ammunition.

Russia's monthslong effort to capture a Ukrainian town shows it still hasn't learned how to successfully encircle Ukraine's troops, war analysts said.