In a major bet last summer, Ukraine launched a daring offensive on Russian soil, the first invasion of Russia since World War II. That incursion into the Kursk region stunned Moscow and provided a much-needed morale boost for Ukrainians, but after months of fierce fighting, Russia has recently clawed back almost all of the territory…

A steadfast figure in the anti-vaccine movement who has helped shape Health Secretary Robert F. Kennedy Jr.’s thinking on a possible link to autism has joined his department to work on a study examining the long-debunked theory, according to people familiar with the matter. The new analyst, David Geier, has published numerous articles in the…

King Charles III was briefly hospitalized on Thursday morning after suffering side effects from his cancer treatment, Buckingham Palace said in a statement. The palace said Charles, 76, had since returned to his London residence, Clarence House, and that his public schedule for Friday would be canceled as a precautionary measure. The king announced he…

South Korea’s largest wildfires on record blazed through the country’s southeast for a seventh day, with firefighters, soldiers and heritage workers racing to evacuate people and save ancient treasures from the encroaching flames. At least 37,000 people were evacuated from their homes as the fires, which have left 27 people dead, spread in the dry…

European leaders convened in Paris on Thursday to shore up support for Ukraine, a “coalition of the willing” that wants to help the war-torn country fight back against Russia despite wavering American commitment, and safeguard an eventual peace. France and Britain have been spearheading those efforts, which led to a first meeting in Paris in…

An international student in a graduate program at Tufts University was taken into federal custody on Tuesday outside an off-campus apartment building, according to the university’s president and an attorney representing the student. The student, Rumeysa Ozturk, a Turkish citizen, had a valid student visa as a doctoral student at Tufts, according to a statement…

Congressional Republicans laced into PBS and NPR on Wednesday, accusing the country’s biggest public media networks of institutional bias in a fiery hearing that represented the latest salvo against the American press by close allies of the Trump administration. Representative Marjorie Taylor Greene, the Georgia Republican who organized the hearing — which she called “Anti-American…

Russia and Ukraine have said they are committed to cease fighting in the Black Sea, but it remains unclear whether an agreement can come into force soon — if at all. Russia had a major caveat: it would abide by the deal only after various restrictions were removed from its agricultural exports. The penalties were…

But voting for Mr. Trump did not necessarily mean that these young people had become MAGA faithful. Responding to a survey I conducted last summer, one young woman from the West Coast, a Latina commuter student with a lot of financial aid at a large, nonselective public university, reported that though she was somewhat liberal…

In years past, the move by senior members of President Trump’s administration to share defense secrets over the Signal messaging app would have represented a serious breach that would have likely prompted investigations by the F.B.I. and the Justice Department’s national security division. Yet so far, neither the attorney general, Pam Bondi, nor the F.B.I.…