What was the recent development in negotiations between the US and Russia regarding the Ukraine war?

The US and Russia recently agreed to four broad principles outlining negotiations and a path forward during talks held in Saudi Arabia. Many acknowledge the necessity of having Russia at the negotiation table as the aggressor in this conflict. However, a significant concern emerged when Ukrainian President Volodymyr Zelenskyy was notably absent from these discussions, with Zelenskyy explicitly stating he wasn't invited to participate in the talks that directly affect his country's future.