Wasting ammo with warning shots on pirates. should have sunk them and moved on.
Yep, sink the boat and toss in a 5 gallon bucket of frozen beef blood to attract sharks for any survivors. No more thought should be given toward exterminating them and all who support them than is given to exterminating vermin in your home or yard.
Why? Did these people kill someone?
Who cares whether or not they killed someone? They're pirates, and just like terrorists they're enemies of humanity and should be killed whenever and wherever they're found.
Why is a pirate an "enemy of humanity"?
What is an "enemy of humanity"?
Why does a soldier have the right to kill people on sight without them having fired on him?
If he shoots at the marine, or looks like he will try to, the marine should shoot him. If he had killed someone and resisted arrest with lethal force, then he could shoot him. Just being armed in a boat is not an on the spot capital offence. Not in the UK or Europe anyway.
Pirates are armed robbers. Typically no-one gets shot either. So for you, in the U.S., the police should always shoot robbers dead even if they do not threaten the officers, and have not assaulted anyone? Because they are enemies of humanity?