With tensions already high between Putin and the US, a public statement expressing his condolences was not only courtious, but necessary. With multiple countries grieving for their nations who were on board flight MH17 this has become and international incident.
Although Putin is apologetic, he does say that if fighting had not erupted in this area, this would never have happened. Way to go, the blame-game is a good one, Putin. Keep it up.
Check out The Sydney Morning Herald for more details.