Crimea has reportedly been absorbed by Russia, and is therefore no longer accepting the authority of Ukraine. All in-progress adoptions are being rejected. My heart breaks for the American families there being told to return home, without their children while they still can, as well as all the orphans Russia is depriving of a future.
For anyone who wants more background on adoptions from the Ukraine, Kim de Blecourt is an excellent resource. She has written a book, Until We All Come Home, about her harrowing journey to bring her son home from the Ukraine.
UPDATE FROM PARENTS IN CRIMEA: There are 22 orphanages with 3,600 orphans in Crimea alone. Russian troops are using orphanages as barracks and weapons storage. This will probably increase the rate of sexual abuse among the orphans. There is no plan to protect the orphans if military activity escalates. There are 118,000 orphans in all of Ukraine; their future is uncertain. Parents familiar with the Ukraine suggest that you contact Alliance for Ukraine Without Orphans for suggestions on the best ways to help: http://www.ukrainewithoutorphans.org/.