No, Donald Trump didn't admit he was wrong to attack the Khans. But he did admit that what he had claimed to be a secret Iranian government video of $400 million cash being unloaded from a plane as ransom for American prisoners -- was not. Instead, it was the news footage shown to the public back in January of the American hostages being released in Geneva by the Iranians.
This also comes a day after a Trump campaign ad was analyzed on Rachel Maddow's MSNBC show Thursday night. It has footage of Hillary Clinton saying "We are going to raise taxes on the middle class." Or at least that is the wording of the text-over the ad-makers have added as she is speaking. But actually MSNBC had slowed down the tape and proved that what HRC actually says is "We aren't going to raise taxes on the middle class."
This is significant, far beyond the gotcha moment of Trump finally having to admit his lies, because it's so clearly not just an exaggeration, or a momentary claim that's not true. His claim about the Geneva plane video was an elaborate description, with great detail of why he knew it had to be a secret Iranian governmental video put out to embarrass Obama and Clinton. He described seeing the "pallets of cash being taken off the plane, and people coming up and grabbing the money." This, and the carefully constructed tv ad, both had to have been planned in advance. Trump's lying has crept into whatever strategy his campaign has; it's more than just him saying whatever occurs to him in the moment.
PS: In addition, Trump reversed himself late yesterday at a rally in Wisconsin and endorsed Paul Ryan, John McCain, and Kelly Ayotte. He was not convincing. Obviously, his advisers have temporarily reined him in. But it won't last, because he so obviously hates to be constrained by caution and decorum.