Darren O'Dea concedes the political situation in eastern Ukraine made it virtually impossible to play there.
Germany beat European champions Spain 1-0 in Tuesday night's friendly thanks to a late goal from Toni Kroos.
San Marino claimed the first European Championship qualifying point in their history after a stalemate with Estonia.
Spain will not defend their European Under-21 Championship title after they were beaten in the qualification play-offs.
Ukraine earned their second win in four days with a 1-0 victory over Macedonia in their European Championship qualifier.
Ukraine got their points tally moving in the European Qualifiers by edging a tight battle with Belarus 2-0 in Borisov.
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