PBS NewsHour

As Pentagon overhauls nuclear triad, critics advise caution

Clip: 02/24/2016 | 9m 30s

The Pentagon is preparing for an extensive -- and expensive -- modernization of the country’s half-century-old land, air, and sea-based nuclear weapons. Supporters contend a fully-equipped nuclear triad is essential for national defense and deterrence, but critics say it’s time to reexamine the extent of our arsenal in a post-Cold War world. Special correspondent Jamie McIntyre reports.