Uncle Sam is effectively bankrupt, borrowing money from China to spend to defend Japan from China. This is no time to expand U.S. military commitments ― to Tokyo or anyone else. Before being corrupted by the allure of power, the DPJ wanted to end Japan’s unnatural defense dependence on the U.S. The Obama administration should help Tokyo take the first step. Washington should make clear that if Japan claims the Senkaku Islands, Japan can defend the Senkaku Islands.