but martin reardon. interestingly we heard the prime minister say the two gunmen have been killed but there might be more operatives. they have killed the two men who could have pointed them to these operatives -- isn't that a bit -- you wonder if they could have spared their lives and found out more about who these other people were that they were involved with. >> until we know exactly what happens as the rescue went down it's hard to answer that. these two gunmen could have been shooting at the police in which case they are returning fire to defend themselves. they may have been determined not to be taken alive. and that's pretty obvious when you are doing the assaulting. >> robin, what do you think? do you think the tunisian authorities had no choice but perhaps to kill these two gunmen? >> yeah when you are engaged in a situation where people are getting shot at and killed the most effective way of dealing with a gunman is to kill him. if he is dead he can no longer kill you or any other hostages. >