Why have Europe and Ukraine been sidelined from the US-Russia talks in Riyadh?

The US-Russia talks in Riyadh marked the first discussion between officials from both countries since the Ukraine conflict began in February 2022, but notably excluded Ukrainian and European representatives. This exclusion appears strategic, allowing the US and Russia to engage in direct dialogue about Ukraine's future without immediate input from the parties most directly affected. Ukrainian President Zelenskyy has expressed firm opposition to any outcomes determined without Kyiv's participation, highlighting the controversial nature of these talks. The sidelining suggests a potential shift in diplomatic approach, raising concerns about who ultimately determines Ukraine's security arrangements and territorial integrity in any potential resolution process.