The article opines that Carl Icahn, billionaire and radical investor, strenuously demands that the Yahoo board agree to sell Yahoo to Microsoft, or he would even initiate a battle for the board's proxy rights. His main purpose is to secure the highest return for himself. Previously, Icahn acquired more than 1 billion US dollars worth of Yahoo shares, amounting to 4.3% of the company. At the end of May, US anti-monopoly regulators also approved Icahn's acquisition of additional Yahoo shares worth 1.5 billion US dollars. Yahoo has become Icahn's biggest gamble. The analysis in the article points out that if Icahn cannot accurately judge whether Microsoft will acquire Yahoo or not, then he will lose both his wife and his soldiers, so to speak, and bring suffering upon himself.