I swear the European politicians are idiots. They have suggested using NATO to defend Greenland from the US.
NATO is a $3B operation. The US spends $200B on just the US Navy.
The US also provides 16% ($500m) of the NATO budget, which it would immediately withdraw.
On top of it, it is very unlikely that the UK would join a military effort to stop the US.
If the US established a naval blockade between Greenland and Iceland, there is absolutely nothing NATO could do about it.
I guess NATO is done thinking about Ukraine. Putting must not have been the existential threat they all said he was.
