Softbank’s Son floats idea of U.S.-Japan sovereign wealth fund: FT FortuneSoftBank’s Masayoshi Son floats idea of US-Japan sovereign wealth fund Financial TimesSoftBank founder Masayoshi Son proposes US-Japan sovereign wealth fund: Report MintSoftbank’s Son Floats Idea of US-Japan Sovereign Wealth Fund: FT Yahoo FinanceUS and Japan in talks for large-scale tech and infrastructure investments MSN