The Eustachian tube originates in the rear of the nose adjacent to the soft palate, runs a slightly uphill course, and ends in the middle ear space. The middle ear space is the hollowed out portion of the skull bone that contains the hearing apparatus and is covered on one side by the eardrum.
brinkmanship, brinksmanship. the technique or practice in foreign policy of manipulating a dangerous situation to the limits of tolerance or safety in order to secure advantage, especially by creating diplomatic crises.
Devised by the Eisenhower administration, the domino theory stipulated that if one country succumbed to communism, the surrounding countries inevitably would fall as well. For this reason, the United States greatly increased its aid to the Republic of Vietnam. At first, American personnel consisted only of non-combatant advisors. In 1959, U.S. military advisors received permission to fire back if the enemy fired upon them.