NBC Nightly News Full Episode - Mar. 21

Tonight, the dangerous new escalation in the war with Iran. With nuclear sites now in the crosshairs in the Middle East, Iran launching this dramatic strike on a town in Israel today, not far from a nuclear site with more than two dozen hurt. Just hours earlier, an Iranian nuclear site once targeted by the US struck again. Plus, Iran launching a long range missile at a joint US British base 3,000 m away. We're live in the region. The growing war disrupting oil and gas markets and threatening the global econ ...