Hostages taken in Sydney + bomb threat

Ok i'll explain it really simply for you.
Let's say this guy had an accomplice, this is very often the case in these kind of situations, and let's factor in the threat of bombs.
Let's say you shoot him with a sniper simply because you can and the accomplice just triggers the bomb, good job, you just killed everyone. What a brilliantly executed plan.

you forget the main point. these are extremist terrorists they would kill everyone in the end eventually. you think they just gonna get what they want and surrender ? this guy adored IS and you know what they do ? kill people.