Sure, if this were Haiti, a nation totally incapable of taking care of itself, but this is Japan, one of the richest nations on Earth, they are capable of managing. They have asked for assistance from other countries, and it has been given, there really isn't much else to be done from outside, the Japanese are going to have to solve their own problems. Sure we're there to help, but the US and the EU doesn't have to run the show.
Here, IMO, is a pretty good take on what more should be done:
The issue is getting time-sensitive resources where they are needed.