Should Obama Apologize for Hiroshima?

Would Obama be wrong to apologize, though?  When Archbishop Sheen called Hiroshima the destroyer of moral boundaries, he was speaking not from the left or the right side of the political spectrum, but rather from the heart of his church and from the standpoint of the natural law.  It is always wrong intentionally to kill an innocent person â?? that is, to murder.  And one should never adopt an immoral means to oneâ??s end.  These are the precepts behind centuries-old laws of war, which have distinguished combatants, who may be targeted lawfully, from non-combatants, whose death one may never intend.