The soccer teams that play for two neighboring cities are intense rivals. The

first city's team has started recruiting new players from different cities and

even foreign countries in an effort to build a stronger team. After learning

this, the second city's team begins its own recruitment campaign to find even

better players. Over a period of months, each city recruits dozens of players

for its team, each time trying to find a better recruit than its rival's most recent

addition

This scenario is most similar to which Cold War idea?