Pro-Russian forces seized two Ukrainian missile defense battalions in the Crimea region on Wednesday, according to a report.
NBC News was unable to immediately to confirm the report.
Interfax news agency quoted a military source as saying: "We now expect the arrival of Russian missile specialists and pro-Russian activists who will have to persuade the Ukrainian military personnel to carry out joint combat duties.''
Interfax is a Russian news service with operations in Ukraine.
First published March 5 2014, 3:50 AM