There's quite a difference between trying to force the world to be peaceful whether it wants that or not, on the one hand, and offering a blessing to individual beings, on the other! But you've raised an important issue here. It's crucial to remember that offering a blessing to beings does not mean, say, letting them stomp you.

I recall some very profound Zen literature from medieval Japan in which the point is made that it's entirely possible, and indeed spiritually necessary, to be able to direct love and compassion toward someone while you're struggling with them in a duel to the death. That's one of the things that's included in the concept of unconditional love, or for that matter in the Christian precept to love your enemies -- it doesn't make them not your enemies, it means you recognize that they are also children of the Divine, spiritual beings in the midst of the give and take of life, and the hard necessity that pits you against them doesn't change that.

It's a challenging concept to grasp, since it flies in the face of our usual assumptions, but it's worth contemplating.