I haven’t been following the war there in detail, but I don’t think Ukraine has cut off Crimea from the rest of Russia. Maybe I’m wrong.
It occured to me that the coasts as I define them in this thread are topological coasts, rather than geographic coasts. But I don’t think that calling them that would make the idea any easier to those who have trouble with the concept.
It is not. Bhutan is not on the State Dept list of recognized countries in the link I provided in post #32.
As the information at the beginning of that site indicates, this is a list of countries the US has had diplomatic relations with. “Having diplomatic relations with” another country is not the same thing in diplomacy and international law as recognising that country (which is just about acknowledging its existence in international law). Bhutan joined the UN in the 1970s, which the US could have vetoed but didn’t (because accession of a new country to the UN requires a recommendation from the Security Council). The US has no issues with Bhutan’s sovereignty.