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.
The cold war affected Americans normal way of thinking and choices, as well as gov. leaders,they prepared for soviet attacks(students learned to duck under desks, turn away from windows ,and cover their heads,families built fallout shelters) Explain, in your own words, the policy of brinkmanship.