There is a language sometimes called Moldovian or Moldovan--it's essentially identical to Romanian but is sometimes written using the Cyrillic alphabet (as it was in the Moldovian SSR before the break-up of the Soviet Union, and still is in the breakaway region of Transnistria which has a Slavic majority [Russian and Ukrainian]).
So Obama wouldn't necessarily be showing ignorance if he were to refer to the Moldovian language, but he might be showing support for the Communists in the breakaway region.