Why are Ukrainians and Europeans frustrated with the recent diplomatic talks in Saudi Arabia?

Ukrainians and Europeans are experiencing significant frustration and anger because they were excluded from recent diplomatic talks with Russia held in Saudi Arabia. The Ukrainians were completely left out of these discussions despite being the country directly affected by the conflict with Russia. Similarly, European allies are questioning when they will be invited to participate in negotiations, especially after investing billions of dollars in Ukraine's defense. They are concerned about their role in the peace process and what return they can expect on their significant financial commitment to supporting Ukraine. This exclusion has created tension among key stakeholders in the ongoing conflict.