It was pretty widely suspected by US intelligence for several weeks  that war was "imminent"...
OK the diplomatic  meeting with Cordell  Hull at the same time as the raid was being launched was a bit "off"...
They were minutes away from breaking of diplomatic relations.....

Tactically surprise is a tool, and the US has launched many "attacks" since WW2 in same fashion.
100% not "picking sides"  here but NO country suffered more than Japan from WW2 bombing damage,food shortages etc etc..
Its not about "apologizing" any more...and WW2 veterans were the first to understand that.