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absence – n. a state or condition in which something expected, wanted, or looked for is not present or does not exist;
aspects – n. a part of something
tier – n. a level or step in a group or organization
counterbalance – n. weight than balances another weight
maritime - adj. of or relating to sailing on the sea or doing business such as trading by sea
sovereignty – n. controlling influence; unlimited power
extent – n. the point or limit to which something extends
strategic – adj. related to a general plan; useful in carrying out a plan
navigation – n. the science of getting ships, airplanes or spacecraft from place to place
