As long as one has reasonable assurance the target in question is indeed a dangerous terrorist, few people will disagree with that. But when its sufficient that some politician can just say he is a dangerous terrorist, with no oversight, no burden of proof, then it becomes a completely different matter. Thats the sort of power that defines a tyranny.
So, give more info if it is true that a politician can kill people without consequence. Who can do this? And what are the steps to accomplish it? What checks and balances are in place? Who all would have to be "in on it"?
Innocent people die all the time already, you really think those predator attacks shoot arrows rather than missiles that kill anyone in the area? Thats not the question however, the question is, is any of it making you any safer? My guess is: nope, quite on the contrary.
If you have proof that killing a suspected terrorist outside of the legal system would cause us to be less safe, then please, do share. Otherwise, I will hold by the belief that a suspected terrorist dead = a suspected terrorist who can't terrorize.