Ukraine President : pro - Russian rebels should be called terrorists . Richard Barrett : There 's no internationally agreed definition of terrorism . Under ' s definition , Malaysian plane 's downing would be illegal -- but only if intentional . Barrett : The world is seeing a merging of terrorist states and quasi - states .
Ukraine President says pro-Russian rebels should be called terrorists . Richard Barrett : There 's no internationally agreed definition of terrorism . Under '71 agreement , Malaysian jet 's downing would be terrorism -- but only if intentional . Barrett : The world is seeing a merging of terrorist groups and quasi-states .