theguardian – DD Guttenplan – Sat 2 Aug 2014 10.00 BST
Fifty years on we know the trigger for war with Vietnam was a fiction. Will it be another 50 before we know the truth about Iraq?

Once there was a president who warned the world about conduct his government would not tolerate. And when this “red line” was crossed, or seemed to be, he took the US to war. Though this might sound like America’s involvement in Iraq, or Afghanistan, or Belgrade, or Libya, and what may yet become a wider war in Syria, this story began 50 years ago, on 4 August 1964.