It's critically important. Let me say this: We cannot allow those criminals who shot down the plane to hide behind state secrets, and we cannot allow the Iranian government to hide the criminals from international prosecution. Going to the international court is one option.
Ukraine has a very impressive experience of dealing with such tragedies. I can refer you to the MH17 situation. In fact, in Ukraine, it's the same investigation team that is now dealing with PS752.
Going back to your question, it's very important that we speak with one voice. It's very important that together we get to the bottom of this terrible tragedy.