Dow plunges 300 points while oil prices, Lockheed Martin jump amid Iran attacks, ‘uncertainty in the air'

US stocks plunged Monday morning as oil prices spiked and investor uncertainty shook markets amid US and Israeli air strikes on Iran, while defense stocks like Lockheed Martin jumped.The Dow Jones Industrial Average fell 311 points, or 0.6%, while the S&P 500 and Nasdaq each sank.Gold futures rose 1.9% to $5,348.50 as anxious investors rushed to safe-haven assets, and Wall Street’s volatility index jumped to its highest level so far this year. 4 US stocks plunged Monday morning following US-Israeli air st ...