COVER STORY This issue: Ukrainian President Volodymyr Zelensky speaks out on Trump, Putin, and the price of peace.  Nearly six years have passed since Volodymyr Zelensky was elected President of Ukraine, yet he still cringes at all the polished brass and chandeliers that crowd his office. The place does seem rather gaudy, like a room plucked straight from Mar-a-Largo, and Zelensky can’t seem to stop apologizing for it as he shows me around one evening in March. He would rather scrap the furniture…To understand the world we live in, read TIME.

Researchers are racing to understand why. Dr. Frank Frizelle has operated on countless patients in his career as a colorectal surgeon. But there’s one that stayed with him. In 2014, he was treating a woman in her late 20s suffering from bowel cancer—already a rare situation, given her age. But it became even more unusual when her best friend visited for in the hospital and told Frizelle that she had many of the same symptoms as his patient…

The release of DeepSeek R1 stunned Wall Street and Silicon Valley in January, spooking investors and impressing tech leaders. But amid all the talk, many over-looked a critical detail about the way the new Chinese artificial intelligence model functions—a nuance that has researchers worried about humanity’s ability to control sophisticated new AI systems. It’s all down to an innovation in how DeepSeek R1 was trained—one that led to surprising…