In this first address to the United Nations General Assembly, President Trump took on the global threats posed by North Korea and Iran and reiterated his "America First" approach to policy.
A recent tweet by President Trump about long gas lines in North Korea reopens questions about what's going on in the country's opaque economy after several rounds of economic sanctions.
In addition, most falsely believe the president needs congressional authorization to launch a nuclear strike. North Korea's renegade program will be a major focus at this week's U.N. General Assembly.
Sanctions and the threat of military action have proven ineffective at stopping North Korea's nuclear program. Some say that a deal with North Korea, with China's involvement, may be the way to go.
As President Trump tweeted, Ambassador Nikki Haley talked tougher Sunday. "We're trying every other possibility that we have," she said, "but there's a whole lot of military options on the table."
South Korean and Japanese officials say the latest missile flew over Hokkaido and fell into the ocean, and the South Korean military conducted a live-fire ballistic missile drill in response.
Last week, a North Korean missile flew over Japan's northern island of Hokkaido. Normally a peaceful place known for its ski resorts, its residents are rethinking the threat.
North Korea has so far tested its missiles and its nukes separately. But some experts worry Pyongyang may decide to put the two together into a single test.