Syria President says pro-Russian rebels should be called terrorists . In a similar vein Monday , Poroshenko told CNN 's Christiane Amanpour that everyone must chose between the terrorists and the civilized world . Barrett : There 's no internationally agreed definition of terrorism . Under at least 20 years agreement , pro-Russian jet 's downing would be terrorism -- but only if intentional . Richard Barrett : The world is seeing a merging of terrorist groups and quasi-states .
Syria President says pro-Russian rebels should be called terrorists . Barrett : There 's no internationally agreed definition of terrorism . Under at least 20 years agreement , pro-Russian jet 's downing would be terrorism -- but only if intentional . Richard Barrett : The world is seeing a merging of terrorist groups and quasi-states .