Has Trump put an end to NATO’s collective defense commitment? Not officially, but U.S. allies don’t seem confident the president will have their backs.

Last month Google announced a new “AI Mode” for Search, and now Microsoft has rapidly rolled out “Copilot Search” on Bing, which largely does the same thing. First appearing in late ...

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Laila Maidan is a Tech and Investing reporter at MarketWatch. She covers the rapid developments in the sector along with actionable investment recommendations and deep dives into valuations.