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"Emerging technologies including unmanned delivery will be the core engine driving its businesses in the future," he added.

"Electric cars are not rocket science and there is no need for the government to make an exception," he said.

"Every single week practically you hear about scientists being dismissed or relocated and key positions not being filled," Ray Weymann, an astrophysicist and a co-organizer of the open letter, was quoted by The Guardian as saying.

"Digitalization, which accelerates the turnaround of products, has become a necessity and an irreversible mega trend for foreign trade," he said.

"Each course has major risks, but Trump appears to have concluded that maintaining the status quo is not an acceptable alternative. He has indicated he is open to many different options, including military strikes on the DPRK's launch capabilities. He seems very serious about resolving this issue this year," West said.