The dismissal of Gen. Charles Q. Brown as chairman of the Joint Chiefs of Staff was startling, if not unexpected, at the beginning of President Donald Trump’s second term.

KYIV (Reuters) - President Volodymyr Zelenskiy on Sunday appointed Major-General Andriy Hnatov as Ukraine's chief of the ...

Promising results from an early-stage trial suggest that lenacapavir injections might offer long-lasting protection. What will really matter in the long run? That’s the question we tackle each ...