assure – v. to make something sure or certain

assumption – n. something that is believed to be true or probably true, but not known to be true

isolationism – n. the belief that a country should not be involved in agreements with other countries

exit – n. something that is used as a way out of a place

insurance – n. an agreement in which someone makes payments to a company and the business promises to pay money if the person dies or is injured

destination – n. a place to which someone is going

gateway – n. an opening in a wall or fence

NATO – n. short for the North Atlantic Treaty Organization