By the end of May, the "Kriegsmarine" had become even more opposed to invading Britain following its costly victory in Norway; after Operation Weserübung, the "Kriegsmarine" had only one heavy cruiser, two light cruisers, and four destroyers available for operations. Raeder was strongly opposed to Sea Lion, for over half of the "Kriegsmarine" surface fleet had been either sunk or badly damaged in "Weserübung", and his service was hopelessly outnumbered by the ships of the Royal Navy. British parliamentarians still arguing for peace negotiations were defeated in the May 1940 War Cabinet Crisis, but throughout July the Germans continued with attempts to find a diplomatic solution.