Dow futures drop 500 points after Trump announces Strait of Hormuz blockade as talks fail: Live updates - CNBC

1. Dow futures drop 500 points after Trump announces Strait of Hormuz blockade as talks fail: Live updates  CNBC
2. U.S. Threat to Blockade Hormuz Sets Up Risky New Showdown  WSJ
3. US military says it will blockade Iran’s ports as ship traffic appears to halt in Strait of Hormuz  AP News
4. US to blockade Iran after talks fail to yield a deal  Reuters
5. Trump’s strait blockade risks another serious blow to the global economy  CNN