At least seven people were killed by a mysterious explosion in northern Russia, and U.S. officials believe it happened during the test of a prototype for a nuclear-propelled cruise missile. President Vladimir V. Putin of Russia has hailed the weapon as the centerpiece of Moscow’s arms race with...

Under international pressure, China has said it has released a vast majority of the Muslim Uighurs it had placed in detention camps. We follow up with an American citizen who says the Chinese government cannot be trusted, and find out how Beijing’s propaganda machine has responded to his efforts...

Protesters have flooded Hong Kong’s airport, paralyzing operations and escalating tensions between the semiautonomous territory and Beijing. The protesters are trying to send a message to government officials — and to people in mainland China. Guest: Javier C. Hernández, a New York Times...