Canada

https://www.washingtonpost.com/world/2023/05/15/war-on-terror-911-deaths-afghanistan-iraq/

Give it time? No, I think any military/tech advanced country would do the "retribution" as deterrent for that short lived celebration of terror act. The only thing that stopped massive scale wars between economic powers are that they do it in proxy wars and flex their muscle at the cost of people and lives that aren't their own. Even if they are directly involved, see above, they aren't shy away from just "use" their citizens as long as it achieve the political/military goals, while the arms dealers enjoy their record profits and funds worth them retiring for probably another couple thousand years for their offsprings. No matter how moral high ground people likes to pretend they are when they are not involved, we are not creature that thinks logically when things could have been prevented at much earlier stages.

The smart and logical flees and avoid physical and violent conflicts like war because there are no logic reasoning with it. Yes there is logic of how to defeat or kill enemies or drain their supply, economic etc as the people behind flexing their manipulation power, but there are no logic on how to prevent more killings as the war started. Cause those would needed to be done way before the war started.

The senseless death from any big scale conflict can be attributed back to mostly, guess who, yes, us everyday citizens. You gave those political figures power to decide when and how they send people to kill and die. From both side, regardless of the death tolls and how atrocious one side is killing another.

I am not even touch the topics why the hate or bigotry is in place so they hate each other already before the conflict started. I am just assuming that most won't care or if you do care you already did the homework.