Finland and Sweden obviously fear it, as do the Balkans and dozens more countries, even Switzerland and Austria are thinking that what they see from Russia in the future might force them to seek protection from it by asking to join NATO.
Good deal for Finland and Sweden. NATO is the insurance policy that has the US acting as the guarantor of their sovereignty up to and including nuclear war and footing the bill. NATO is a paper tiger. The UK can fit its entire army (86,000) in Wembly stadium and have 14,000 seats vacant.
Without the US, NATO is a paper tiger. It is time to have Europe pay for its own defense. With a combined GDP equal to the US and a population of 500 million, Europe has the means to defend itself. NATO, like the UN, is an anachronistic organization stuck in the post WWII period.