Flashy AI, robotics and self-driving cars will be on show at the annual Web Summit in Lisbon from Monday, but global tensions over high-tech trade, competition and sovereignty will be weighing on the minds of entrepreneurs, investors and policymakers.

Known as the "Davos for geeks", the four-day event in the Portuguese capital is set to welcome over 70,000 visitors, including 2,500 startups and 1,000 investors.

- AI and chips -

With major global players racing to control the supply chains behind generative artificial intelligence, an appearance by chief executive of American chip developer Qualcomm Cristiano Amon will be a hot ticket.

His company recently announced a new range of AI chips designed to compete with sector heavyweight Nvidia and challenger AMD.

Both firms' high-end proce

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