Running up the score, the Obama campaign claims to list 17 lies McCain told during the debate (why 17 ? They probably just chose a number at random). The first 16 are whoppers. Most have long since been debunked. The fact that McCain repeats debunked claims, means that they are lies not mistakes.
However, what about number 17 (17 is the unlucky number in Italy)
17. SOMALIA. McCain held up Somalia as an example of failed American foreign policy, saying “we ended up having to withdraw in humiliation.” McCain ignored the amendment he introduced in 1993 to cut off funding for troops in Somalia.
Huh ? This shows that McCain opposed the intervention while it was happening and not just when Clinton agreed that it had failed and withdrew US troops. This was not 20-20 hind sight. Interestingly, the Obama campaign doesn't argue that the US troops shouldn't have been withdrawn (their are fact checking). They suggest that the troops were withdrawn because funding was cut off. This is nonsense. They were withdrawn because some were being killed and they were contributing to the problem not to the solution.
I can say this with 20-20 hindsight, because I disagreed with McCain when he argued for a troop withdrawal and with Clinton when he ordered it (at that point supporters of a cointinued US presence were down to Boutros Boutros-Ghali, Robert Waldmann and, maybe, Jonathan Howe) . I thought Somalia would fall back into hot open high level civil war and famine. I was wrong. The level of violence decreased.
On Somalia I was wrong wrong wrong and John McCain was right. He tried to use the power of the purse to end an engagement which was worse than worthless. Also his quoted statement is true. The fact that he denounces using the power of the purse (when not voting against funding for US troops in Iraq himself) is a separate matter.
Look a sweet 16 would have been plenty. There was no need to gild the lilly.