2. The use of force, including deadly force, is authorized to protect the following:
That permissive phrase allows our troops to use deadly force if, in their judgment, they are at risk of life/limb or "friendlies" identified by ROE are at risk.
If the ROE were as restrictive as some here claim (such as the MYTH that our troops cannot attack mosques, even when fired upon from a mosque), our troops would not be conducting so many offensive operations. Dev, anything to add? You're more up on current policies and the like.