OMAHA, Neb. – Elbridge Colby, undersecretary of defense for policy, said here Wednesday the U.S. must pursue arms control while maintaining a credible nuclear deterrent, arguing future agreements must account for China’s rise and evolving proliferation pressures. Speaking at the U.S. Strategic Command’s (STRATCOM) annual Deterrence Symposium, Colby said the administration’s priority is preventing further nuclear proliferation by ensuring U.S. deterrence remains credible and rational for presidential decision-making. “I think the most important thing that we can do on the…