Though I would hope that in a hopefully civilized age such acts and war crimes would be punished prevented from happening again, I would not say there are
no consequences of these actions.
Many Dutch citizens have been killed on board of MH17 - and the amount of military support to Ukraine provided by the Dutch has been quite significant.
As for Iran and North Korea - I would say some lines have been crossed there that will play out longer term, but at least it now seems to be, for some peculiar reason, easier for South Korea to ship artillery shells abroad, either directly to Ukraine or to back fill allied stocks so they can ship what they have to Ukraine.
Also I don't think Isreal/Russia relations will recover from what Iran linked terrorists did on October 7. While rather busy right now, Isreal produces some rather advanced weapon systems, one really does not want to be on the receiving end of (see the Karabakh war as an example).
Also after it became apparent Russia was behind the Vrbetice ammunition warehouse explosion (https://en.wikipedia.org/wiki/2014_Vrb%C4%9Btice_ammunition_...), which killed 2 Czech citizens, the response was quite significant (on a 10 million citizen country scale):
* almost all Russian diplomats expelled (ending one of the bigger Russian embassies in EU)
* Russia was removed from the lucrative Dukovany nuclear power plant tender
* many Czech companies who still had relations from the soviet times with Russian companies stopped providing support and shipping replacement parts
* LOTS of kit:
https://www.oryxspioenkop.com/2022/07/bohemian-brotherhood-l...
- 79 MBTS + 105 more to be restored & shipped to Ukraine
- multiple mi-24 helicopter gunships
- 100+ IFVs
- dozens of self propelled guns
- Anti Shahed technicals (!)
- 10000 RPGs, 1.5+ Million Artillery, Tank And Mortar Shells, a small mountain of small arms, a big mountain of small arms ammunition
Some of this was even crowdfuded - a tank, a Tatra based MLRS system, some of the technicals. There is also an ongoing fundraiser to buy a UH-60 Black Hawk (!):
https://www.weaponstoukraine.com/kampane/cestmir
So while in reality evil is often not ended by Gandalf charging in, the same or arguable even worse result for the evildoer is often achieved over a longer time with less glorious, messy but still effective means.