Here's a link which might explain it further.
Here's a snip from it.
From 1969 to the end of the war, over 20,000 American soldiers lost their lives in a war that the United States did not have the resolve to win. If General Giap was accurate in his assessment that North Vietnam was going to seek a conditional surrender but stopped due to the sensationalism of the American news media and the anti-war protests following the 1968 Tet Offensive, it follows that those who participated in these anti-war activities and misreporting have to share partial responsibility for those 20,000 + Americans deaths.