Joe: saying in 2003 that the intelligence says Iran is trying to build nuclear weapons, and then saying in 2007 that new information suggests they stopped, is not a lie.
Saying "I didn't have sexual relations with that woman"? That's a lie.
Saying "I just happened on my one experience with trading options to make a hundred times my investment"? Very probably a lie.
Stealing another politicians speech and using it as you own, without attribution? If not a lie, then the next best thing.
But saying "I have new better information that has changed our understanding"? Not a lie.
Always happy to help.