Colin Kahl told a UN conference in New York that global security was at its most challenging since the Cold War.
"It was pretty insane for me to challenge Putin to one-on-one combat," the world's richest man said before being asked about the North Korean leader.
"As a regional country, we hope that peace and stability in the Taiwan Strait will continue," a South Korean Foreign Ministry official told Newsweek.
"I would probably not take the note if given the opportunity to redo," the man admitted.
North Korea is now the third nation to recognize Russian-backed separatist regions in eastern Ukraine as independent states.
"We see the U.N. Security Council doesn't work after Ukraine, and China doesn't support any more sanctions against the DPRK," a South Korean official said.
The second phase toward joining the Koreas under the plan includes "two different systems and two different governments under the same country."
U.S. officials are still watching for what they believe could be North Korea's first nuclear test in five years.
The latest remake of the hit Spanish series is "very much a Korean story," Kim Yun-jin, who plays the fierce negotiator in the new K-drama, told Newsweek.
The remarks by the former generals come in the wake of China and Russia vetoing further sanctions against North Korea last month for the first time since 2006.
Defense Secretary Lloyd Austin slammed China's harassment of "allied aircraft operating lawfully in the East China and the South China Seas" on Saturday.
The nuclear-powered, 100,000 ton aircraft carrier USS Ronald Reagan participated in the three-day exercises.
Chinese fighter aircraft reportedly flew as close as 20 feet to Canadian surveillance planes.
"China up next?" asked Trump, who said President Biden's recent remarks have made nuclear war more likely.
The U.S. president has joined the president of South Korea Yoon Suk Yeol in calling neighboring North Korea an "evolving threat."
South Korean President Yoon's "priorities are very much in line with Biden's own," The Wilson Center's Sue Mi Terry told Newsweek.
The WHO this week implored North Korea to use all available tools to fight its growing COVID outbreak as Pyongyang continues to reject outside help.
The World Health Organization is concerned by Pyongyang's failure to respond to multiple offers of assistance, including from its neighbors.
The World Health Organization has confirmed that North Korea is one of only two nations in the world that has not begun a COVID-19 vaccination campaign.
A newly published article from the country's state-run media said that Kim Jong Un personally taste-tested batches of baby formula to help perfect a new recipe.
North Korea has claimed to have had remained COVID-free for more than two years during the pandemic.
WHO Representative to North Korea Edwin Salvador told Newsweek the agency "is yet to receive an official report" confirming the country's first COVID-19 case.
The launch comes three days after a reported missile test and three days before South Korea's president-elect is inaugurated.
Japanese and South Korean officials say North Korea fired a ballistic missile into the sea on Wednesday.
If Yoon Suk-yeol successfully navigates the turbulent waters of geopolitics in Asia, then he could be remembered as one of South Korea's most transformative presidents.
It comes amid signs North Korea could resume nuclear weapons testing for the first time since 2017.
The test follows North Korea recently conducting long-range tests of ICBMs for the first time since 2017.
The FBI pledged to fight North Korea's "use of illicit activities—including cybercrime and cryptocurrency theft—to generate revenue for the regime."