Chinese President Hu Jintao, making an extremely rare direct address to the foreign media, defended his government's preparations for the coming Olympic Games in Beijing and pledged to continue reform policies despite increasing economic challenges.
Private apologies are often warranted, but public apologies are not. The Right was adamant that Clinton apologize for the Lewinsky affair, but that was just a camel's nose under the tent for more apologies and concessions. So too with the Left demanding that Bush apologize for getting WMD wrong. Every apology just leads to more requests: if you apologize for getting X wrong, why not do what you disagreed with when you asserted X?
As a prior litigant, I understand that there is a big difference between being reasonable with someone arguing in good faith, and being reasonable with someone who does not have good faith. A public apology will be used by everyone, and that will necessarily include lots of people with bad faith.
Your allies don't need apologies, they will understand mistakes are part of life; your enemies will use them against you.