So with all this hoohaa over Ukraine, what fighter assets do the newer Eastern European NATO partners bring to the immediate defence of the Eastern flank?
Well it's pretty dismal:
Albania:
Current: Nothing.
Planned: Nothing
Baltic states:
Current: Nothing. Western Europe provides a few jets for air policing.
Planned: Nothing
Bulgaria
Current: 15 x MiG-29, 12 x Su-25, 12 x MiG-21
Planned: Nothing – air policing to be taken over by Greek Air Force and fighter fleet to be deactivated in latest news. Plans to acquire 8-9 second hand F-16s have been scrapped due to lack of funds.
Croatia
Current: 2 x MiG-21
Planned: 12 Mig-21s to be overhauled in Ukraine and serve to 2019 after which there is no replacement in sight. Plans to acquire up to 12 modern replacements have been virtually scrapped.
Czech Republic
Current: 14 x JAS-39
23 x L-159 (basically an upgraded L-39 trainer)
Planned: as above
Hungary
Current: 14 x JAS-39
Planned: as above
Poland
Current: 48 x F-16C/D, 32 x MiG-29, 32 x Su-22
Planned: 48 x F-16C/D plus 48 x F-35 (if they can afford it)
Romania:
Current: 36 x MiG-21 operational
Planned: 12 x F-16AM/BM from Portugal in 2017 to replace MiG-21
Slovakia
Current: 8 x MiG-29 (4 more in operational storage)
Planned: Possible acquisition of 6-7 JAS-39 to replace MiG-29
Slovenia:
Current: Nothing.
Planned: Nothing
So other than Poland, most of the new partners either don't have fighter fleets or only have a single small squadron of often obsolete fighters.
Hence if there is ever conflict with Russia, NATO will have to dedicate a large chunk of its air forces to guarding these countries as they're completely incapable of doing so.