During the process of decision-making of rules of engagement in the Malvinas Islands War, British War Cabinet had to constantly balance between conflicting political and military considerations. Maritime Exclusive Zone and Operation Paraquet formed the basic framework of rules of engagement. The War Cabinet gave more priority to the threat to its special combined fleet when it achieved its first victory and Britain secured the support from the United States. Later, with the mounting military pressure and deteriorating domestic public opinion, the British War Cabinet set more targets of attack as well as expand the geographical scope for military operations. After the sinking of the Belgrano, military considerations acquired paramount importance. The raltionalization of rules of engagement further reduced political constraints on military operations. When it came to Operation Sutton, the War Cabinet did not impose rules of engagement on its special combined fleet.