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Masayoshi Son, chairman and chief executive officer of SoftBank Group Corp., left, shakes hands with Mohammed bin Salman, Saudi Arabia's crown prince, after signing an agreement in New York, U.S., on Tuesday, March 27, 2018. Saudi Arabia has signed a memorandum of understanding with SoftBank for a $200 billion solar power project in the kingdom, calling it the single largest of its kind in the world. Photographer: Jeenah Moon/Bloomberg via Getty Images

Masayoshi Son, chairman and chief executive officer of SoftBank Group Corp., left, shakes hands with Mohammed bin Salman, Saudi Arabia's crown prince, after signing an agreement in New York, U.S., on Tuesday, March 27, 2018. Saudi Arabia has signed a memorandum of understanding with SoftBank for a $200 billion solar power project in the kingdom, calling it the single largest of its kind in the world. Photographer: Jeenah Moon/Bloomberg via Getty Images