You don't just 'wait and see' you see. You make sure the antagonist knows you fully intend to take them out if they cross the line, and they should also know you have the capability to do so. It is like 'trust but verify.'
Take what out? Suicidal terrorists don't have any property to take out. Trust and verify? I trust the Iranians mean it when they open and close parliamentary sessions with "Death to America." I suppose you opposed the Iraq war too.