U.S. President Joe Biden arrived in eastern Kentucky on Monday to survey damage from severe flooding that swept away houses and vehicles, and killed at least 37 people last week.

Engineers from MIT have created a new ultrasound device that can be worn for up to 48 hours, allowing doctors to continuously monitor and capture images of internal organs and tissues while the patient is mobile.

China’s move to suspend cooperation with the U.S. to combat narcotics trafficking, including illicit fentanyl, is “unacceptable,” the White House said on Monday, as Beijing continued to protest a visit to Taiwan by U.S. House Speaker Nancy Pelosi.

“I think that nobody, nobody can accept the idea that a new nuclear war would happen. This will be the destruction of the planet. What is clear is if nobody uses for the first time, then there will be no nuclear war,” Guterres said.

Gustavo Petro on Sunday became Colombia’s first leftist president, pledging to unite the polarized country in the fight against inequality and climate change and achieve peace with leftist rebels and crime gangs.

Ukraine said on Sunday that renewed Russian shelling had damaged three radiation sensors and hurt a worker at the Zaporizhzhia power plant, in the second hit in consecutive days on Europe’s largest nuclear facility.