Uber has worked to cut costs for months, early enough relative to others that a memo the CEO wrote on this tougher stance "landed a bit like a lead balloon initially," Dara Khosrowshahi saidon the sidelines of the World Economic Forum's annual meeting.

An Indian farmer recently used a ChatGPT interface to access an opaque government programme via the internet despite knowing only a local dialect, Microsoft chief Satya Nadella said on Wednesday.

During a speech on Tuesday at the World Economic Forum in the Swiss Alpine resort of Davos, Ms Zelenska said she had a letter for Xi but she gave new details during a press conference on Wednesday.