I wouldn't consider losing territory equivalent to losing lives. Also, isn't the opinion of those living in Crimea important?

Ukraine wants to defend themselves _and_ to retake Crimea, something they cannot do on their own, so they need weapons. Who is winning is not at all clear. When this started, it was assumed that Russia would collapse very quickly, so far this has not happened.. at what point is this strategy reconsidered?

Is the possibility of reconsideration already at hand, and are articles such as these meant to serve as a bulwark against breaks for peace? It makes me suspicious.