Former Defense Secretary Donald H. Rumsfeld, in a rare public speech, warned that American military and financial weakness is creating a more dangerous and unstable world. Rumsfeld also said the U.S. government, both Congress and the executive branch, is dysfunctional and ill-suited for the information age. He called for creating a blue-ribbon commission to modernize the administrative functions of government agencies and institutions in both branches. The former defense secretary during the George W. Bush administration said he was asked recently what keeps him awake at night. “What I worry about most today is American weakness,” Rumsfeld told a conference...