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https://understandingwar.org/research/russia-ukraine/the-importance-of-ukraines-fortress-belt-geospatial-intelligence-terrain-analysis/
The Importance of Ukraine's Fortress Belt | ISW
Apr 17, 2026 - Ukraine’s Fortress Belt is the cornerstone of a militarily defensible frontline in eastern Ukraine, by ISW.
fortress beltimportanceukraineisw
https://understandingwar.org/map/assessed-control-of-terrain-in-the-fortress-belt-march-24-2026-at-130-pm-et/
Assessed Control of Terrain, Fortress Belt, March 24 2026 | ISW
Mar 25, 2026 - Assessed Control of Terrain in the Fortress Belt, March 24, 2026 at 1:30 PM ET, produced by ISW
march 24 2026assessed controlfortress beltterrainisw
https://understandingwar.org/research/russia-ukraine/the-critical-importance-of-ukraines-fortress-belt-in-donetsk-oblast/
The Critical Importance of Ukraine’s Fortress Belt in Donetsk Oblast | ISW
Feb 22, 2026 - Kremlin officials are reportedly demanding that Ukraine cede to Russia strategically vital unoccupied territory in Donetsk Oblast and freeze the frontline in...
critical importancefortress beltdonetsk oblastisw
https://understandingwar.org/map/assessed-control-of-terrain-in-the-fortress-belt-february-25-2026-at-130-pm-et/
Control of Terrain in the Fortress Belt, February 25, 2026 | ISW
Feb 26, 2026 - Assessed Control of Terrain in the Fortress Belt, February 25, 2026 at 1:30 PM ET, produced by ISW
february 25 2026fortress beltcontrolterrainisw
https://understandingwar.org/newsroom/associated-press-ukraine-faces-a-new-test-as-russia-steps-up-its-drive-to-seize-donetsks-fortress-belt/
Russia steps up its drive to seize Ukraine's fortress belt | ISW
Sep 23, 2025 - An ISW map of Ukraine's fortress belt used in an Associated Press article on September 23, 2025 about the current state of the conflict
russia stepsfortress beltdriveseizeukraine
https://understandingwar.org/map/assessed-control-of-terrain-in-the-fortress-belt-april-5-2026-at-130-pm-et/
Control of Terrain in the Fortress Belt, April 5, 2026 | ISW
Apr 5, 2026 - Assessed Control of Terrain in the Fortress Belt, April 5, 2026 at 1:30 PM ET, produced by ISW
fortress belt april5 2026 iswcontrolterrain
https://understandingwar.org/map/assessed-control-of-terrain-in-the-fortress-belt-april-9-2026-at-130-pm-et/
Control of Terrain in the Fortress Belt, April 9, 2026 | ISW
Apr 10, 2026 - Assessed Control of Terrain in the Fortress Belt, April 9, 2026 at 1:30 PM ET, produced by ISW
fortress belt april9 2026 iswcontrolterrain
https://understandingwar.org/map/assessed-control-of-terrain-in-the-fortress-belt-april-4-2026-at-130-pm-et/
Terrain in the Fortress Belt, April 4, 2026 | ISW
Apr 4, 2026 - A map of Assessed Control of Terrain in the Fortress Belt, April 4, 2026 at 1:30 PM ET, produced by ISW
fortress belt april4 2026 iswterrain