Are you not in just as much danger shooting them at close range given they may have already pulled the pin and killing them would cause them to release the grenade? I can understand shooting someone from a safe distance to ensure they pose no further threat, but standing right next to them makes...
We're supposed to be the 'good' guys defeating a brutal regime. Not using that regime's actions as a justification for our own. We have a proud military history, especially the Royal Marines, and you are basically saying they should be behaving the same as a terrorist militia!?
Forgetting all...
The Royal Marines have a proud and illustrious history as undoubtedly one of our most elite, toughest fighting forces. They are set apart from most of our other fighting units as simply getting through the training to be a Royal Marine Commando is as tough as it gets. Undoubtedly the biggest...
How is the behaviour of your enemy a benchmark for how you behave? We are there to protect freedom, justice, and try to install some kind of democracy. You don't do that by executing your enemy, regardless of what they'd do to you in the same situation.