Softbank, a Japanese wireless provider, is considering acquiring Sprint, a US telecom company, to expand globally. Key points of the analysis include: - Softbank has a successful track record in Japan and is seeking international growth - Sprint needs capital investment to turnaround its subscriber losses in the US market - A combined Softbank-Sprint would create the largest telecom provider in Japan and give Softbank a strong US presence through Sprint's network and ownership of Clearwire - Valuation analyses estimate the combined company's value at $4.46 to $7.78 per share, including $3 billion in annual synergies from cost savings and operational efficiencies.