Russia¡¯s war in Ukraine is looming large over a Group of 20 summit that¡¯s still seven months off, with officials frantically preparing in case Russian President Vladimir Putin decides to turn up.

The range of possible scenarios includes some leaders staying away, sending lower-level delegations or only dialing in from afar, according to people familiar with the discussions among member countries. The meeting could very well end without a formal communique for the first time.

This year¡¯s G20, which includes conversations among chief negotiators, a slate of ministerial meetings and then the summit in November, is being hosted by Indonesia, which finds itself in a very uncomfortable position given the conflict in Ukraine.