The Defense Department estimates the cost to modernize U.S. nuclear forces will be between $350 billion and $450 billion over two decades -- a sum that does not include warhead acquisition nor operations cost -- providing a key data point in a policy debate that until now has been largely framed by cost estimates from think tanks and congressional auditors. Assistant Secretary of Defense for Strategy, Plans and Capabilities Robert Scher provided House lawmakers the Pentagon estimate in July 14...
