NEWPORT, R.I. (AP) — A top military commander asked scholars on Tuesday for bold ideas on how the U.S. Navy can maintain superiority at sea.

Adm. John Richardson, the chief of naval operations, addressed the 69th annual Current Strategy Forum at the U.S. Naval War College in Newport, Rhode Island.

Scholars from Yale University, Carnegie Mellon University and the Center for Strategic and Budgetary Assessments, as well as other universities and think tanks participated.

Richardson addressed China's and Russia's exponential increases in maritime activity, adoption of new technologies and use of i...