When:
Lookups spiked on April 4, 2014 and continued for several days.
Why:
Following the announcement of Iran's nuclear agreement in order to lift international sanctions, to be finalized in June, Iran's foreign minister said: "We are not after a nuclear bomb. We are also not after hegemony in the region, too."
Hegemony means "influence or control over another country, a group of people, etc." or "domination." It comes from the Greek word that means "guide" or "leader."
Pronunciation of hegemony can be tricky: it's usually pronounced with stress on the second syllable, as hih-JEH-mony.
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Merriam-Webster unabridged