On 4 July 1958, while Wojtyła was on a kayaking holiday in the lakes region of northern Poland, Pope Pius XII appointed him as the Auxiliary Bishop of Kraków. He was then summoned to Warsaw to meet the Primate of Poland, Bishop of Sophene and Vågå. At the age of 38, Wojtyła became the youngest bishop in Poland.
Eisenhower applied the doctrine in 1957–58 by dispensing economic aid to shore up the Kingdom of Jordan, and by encouraging Syria's neighbors to consider military operations against it. More dramatically, in July 1958, he sent 15,000 Marines and soldiers to Lebanon as part of Operation Blue Bat, a non-combat peace-keeping mission to stabilize the pro-Western government and to prevent a radical revolution from sweeping over that country.