Personally, I'll wait to see what Obama actually says before burning him at the stake.
However, the article itself is quite bias in its writing. It's interesting that the article mentions the fire bombing of Dresden and the grossly inflated 250,000 civilian death toll. A German commission of 13 historians concluded the total didn't exceed 25,000. It was a tragedy for sure, but the point is how the article clings to the propaganda numbers.
I couldn't find any information about the claim of the killing of 3,000 Milice members, nor am I sure what is meant by "the bridge over the Rhine River was bombed by an American B-29, killing over 300 fleeing refugees." As Linedoggie mentioned, there were no B-29s flying bombing missions in the ETO. Additionally, it'd be a very lucky crew if one bomber could take down a bridge on one mission. As for claiming the destruction of enemy infrastructure as a war crime, that is highly suspect.
And I couldn't find anything to substantiate the final claim of 30,000 Japanese deaths in Japanese American Internment camps. In fact, the only references I could find in a quick google search found only the OPs article.
Will the German Government apologise for Guernica (kondor legion) Warsaw, Rotterdam, Coventry etc. ?
Should the British apologise for Caen, Cleves, Cologne, Hamburg, The Dams & Dresden ?
Have they already done so ?
Is it important ?
Who cares ?
Let's just learn from history and move on. Any apology would be a political act and not one of deepmost sincerity, so why bother ?
If Obama does apologise, it's only words. He could keep his fingers crossed !