U.S. President Donald Trump appears at the United Nations General Assembly for the first time

U.S. President Donald Trump appeared at the United Nations General Assembly on Tuesday for the first time, using his maiden speech to the world body to address what he has said is the top global challenge.

Beginning his speech shortly after arriving at U.N. headquarters in New York, Trump said the world faces destructive threats from rogue states and “terrorists and extremists.”

Here are some of the top quotes from his speech:

On sovereignty

- "We meet at a time of promise and great peril."

- Mr. Trump says a nation state remains the best vehicle for improving the lives of people. "Strong sovereign nations let their people take control of their own destiny. We must reject threats to sovereignty from Ukraine to the South China Sea."

- "We expect all nations to respect the interests of their own people, the rights of other sovereign nations."

- The U.S. "can no longer be taken advantage of, or enter into one-sided deals."

On North Korea

- "If the U.S. is threatened, will have no choice but to totally destroy North Korea."

- "Rocket man is on a suicide mission for himself and his regime."

- "North Korea's reckless pursuit of nuclear weapons, ballistic missiles threatens the entire world."

- Calls North Korea "a depraved regime"

- "It is time for all nations to work together to isolate the Kim regime until is ceases its hostile behavior."

On Iran

- Mr. Trump calls out Iran "for destabilising behaviour", calls it "a murderous regime".

- The nuclear deal with Iran is "one of the worst and most one-sided transactions the United States has ever entered into."