Interesting turn around: after the US invaded non-NATO Afganistan, NATO staged a peacekeeping force there. For at least 15 years.
"At its height, the force was more than 130,000 strong, with troops from 51 NATO and partner nations."
NATO is also directly involved in Iraq, a non-NATO country.
"Since 2018, through its advising and capacity-building efforts, NATO Mission Iraq has contributed to make Iraqi security forces, institutions and structures more effective, inclusive and sustainable for the long term."
So, when it is a question of US security, NATO is involved. When it is a question of other NATO member's security, the US vetos it.
So maybe the question of why Europe should commit their limited resouces to NATO might start coming up?