naval blockade: the interdiction of a nation's lines of communication at sea by the use of naval power
act: something that people do or cause to happen
amygdala: an almond-shaped neural structure in the anterior part of the temporal lobe of the cerebrum; intimately connected with the hypothalamus and the hippocampus and the cingulate gyrus; as part of the limbic system it plays an important role in motivation and emotional behavior