EU needs a ‘drone wall’ to counter threats

I remember having a discussion with a security official during the COVID-19 pandemic. We were noticing how the entire travel industry had come to a standstill and how it would take time to recover. He said something bluntly: “In the future, we might only have spacecraft and trains — basically nothing between low Earth orbit and the ground.” His thought intrigued me, so I asked what he meant.

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