world leader
Noun
Meaning
a person, group, or country, deemed superior in their field.
the leader of a country, such as the president, prime minister, etc.
Source: en.wiktionary.orgSynonyms
Examples
I was told to challenge every spiritual teacher, every world leader to utter the one sentence that no religion, no political party, and no nation on the face of the earth will dare utter: 'Ours is not a better way, ours is merely another way.
You always want to try to make something new, and, of course, America is the world leader in economics today.
The only world leader who sympathised with Indian aspirations at that time was Chiang Kai-shek of China whom Pandit Nehru had denounced as a reactionary tool of Western imperialism only a few years earlier.
I hope that we can continue this cooperation on other critical issues related to America's future technological competitiveness. We must work together to encourage the creative talents that have made our country the world leader in technology.
We need a positive economic agenda that invests in the innovation and growth that will create jobs for middle class families and ensure that America remains the world leader.
It's what we've always known for many years outside of Australia...You can't have a world leader called Kevin. [On Kevin Rudd].