And the second most obvious thing he could have done was to criticize Israel for the countless times that they disrupted a ceasefire deal over the last year and a half. Instead he chose to give them cover and blamed Hamas. The ceasefire agreement was originally put forward in May. Israel rejected.
Oh, and are you forgetting the many times he sent his diplomats to vote against any ceasefire resolution or censor of Israel in the UN? Or his criticism of the ICC for putting out a warrant for Netanyahu's arrest?
Oh, but Biden has done so much has he? That's BS. All he's done is accelerate the death of thousands upon thousands of innocent people.