Surely the point is that if you and your aeroplane are both ICAO compliant, and registered in the same state, you can fly freely in any ICAO state?
Equally, surely somebody in here has access to a copy of Annex 1 and can enlighten us all as to what the minima are?
Incidentally I just did a search on this, and at
http://www.iaopa-eur.org/jipolctd.htm IAOPA have a policy that "States should use only the requirements for issuance of an instrument rating listed in ICAO Annex 1 in an effort to promote universal acceptance of instrument ratings and pilot certificates by all contracting States" Which sound awfully like what we all just said !
G