Question: Are the MiGs capable of mid-air refueling from NATO tankers?
The MiG-29SMT has a re-fuel probe, not sure if it's compatible with NATO's tankers though.
No, maybe a few of those which were given by Luftwaffe, but they won't be send. In this case It's not really needed, because all these three countries together are smaller than most of US states.
I'm not certain but the answer is no. Althoug we have modernize it (mostly avionics) I don't expect that there can refuel in air at all. We hadn't got nor have any flying tunker, so It's pointless- we shall get new F-16's in a year.
No problem, Russians will refuel them for a reasonable fee.