This has been discussed too great lengths. So this note isn't needed.

Crimea is included in the Ukraine relation: https://www.openstreetmap.org/relation/60199

See also:
* https://wiki.osmfoundation.org/wiki/Policies_and_other_Documents for the document for Disputed Territories 
* https://wiki.osmfoundation.org/wiki/Working_Group_Minutes/DWG_2014-06-05_Special_Crimea