I've been absent. Also, I'm going to half ignore your request for non-western sources by concentrating on the Finnish ones with very brief translations or explanations. I was not able to find the main source I was looking for, but this will do for now.

https://yle.fi/uutiset/3-12540078 Finnish major general and former chief of intelligence, Pekka Toveri: "Russia dominates by numbers, but Ukraine's western arsenal is more modern and neither have the resources to solve the situation."

https://yle.fi/uutiset/3-12526593 Toveri: Essentially the same as above, but with various different additional comments.

https://yle.fi/uutiset/3-12314941/64-3-94534 Senior researcher at the Finnish National Defence University, Jukka Viitaniemi on the chances of Ukraine getting back southern regions: "Yes, in light of recent events, considering the weapons and aid they've received. I would say it's entirely possible and even probable. I would give it around a 50-70% chance, I can't say with a 100% that this would happen."

On the chances of taking back Crimea: "In optimal conditions, yes."

https://yle.fi/uutiset/3-12521889 Swedish Military University docent Ilmari Käihkö: "Most observers agree that both sides will run out of troops over summer."

https://www.iltalehti.fi/ulkomaat/a/b94134db-060b-41ba-8d40-a70d8db559f1 Essentially the same as above, but with a fleshed out interview.

https://www.verkkouutiset.fi/a/asiantuntija-hehkuttaa-himars-jarjestelmaa-ukraina-voi-kaantaa-edun-itselleen/#48cc421d Finnish Military University, Military Professor Marko Palokangas: A lot of praise for the effectiveness of HIMARS.

https://www.theguardian.com/world/2022/jul/07/russia-ukraine-war-update-what-we-know-on-day-134-of-the-invasion I've excluded Ukrainian and Russian sources as I mostly ignore them, but it's worth mentioning they've described the HIMAR systems as "game changers".

https://nitter.it/MarkHertling/status/1551668596803358724#m HIMARS and MLRS differences and why they matter from a former US army officer.