Personally, I find that ISW's coverage of the war has been among the worst. I don't trust a word they say unless it is verified from other sources. I remember even Def Mon (one of the most anti-Russian accounts who "maps" the conflict) chastised them for marking one of the islands in the Dnieper as "Ukrainian captured" just because an Ukrainian squad planted a flag there (before quickly retreating to their own side of the Dnieper). With all of the misses they had, and the way they uncritically believe all Ukrainian claims, I can't take them seriously whatsoever.
Anyway, something I saw today.
The GLSDB would be a significant upgrade to Ukraine's formidable HIMARS platforms which have been used with deadly precision and effects thank to NATO ISR. The brochure for this munition can be found on Saab's website.