Estonia is a NATO member, Ukraine isn’t.
Membership has its’ privileges.
So, we should not honor our Security Assurances (plural) to the Ukraine, in which we promised our protection in return for Ukraine sending its 5000 nukes to Russia for destruction?
The signal that sends guarantees a global nuclear arms race and that in turn virtually guarantees a nuclear war down the line. Few have learned the lessons of the 1930’s - 1940’s, but this time it’s with nukes.