CREATE TABLE table_34483 ("Round" FLOAT, "Player" TEXT, "Position" TEXT, "Nationality" TEXT, "College/Junior/Club Team  ( League ) " TEXT)

Which Nationality has a Position of defense, and a Player of nikita korovkin?
SELECT "Nationality" FROM table_34483 WHERE "Position" = 'defense' AND "Player" = 'nikita korovkin'
SELECT "Nationality" FROM "table_34483" WHERE "Player" = 'nikita korovkin' AND "Position" = 'defense'