What was the key disagreement between US and Russian officials during their recent talks in Saudi Arabia?

According to Ambassador McFaul, the US and Russian delegations had fundamentally different objectives for the meeting. The Russian officials, particularly Putin's foreign policy adviser Ushukov, wanted to focus on restarting bilateral US-Russian relations across multiple issues beyond Ukraine. In contrast, the American delegation was there specifically to initiate peace negotiations regarding the Ukraine conflict. This fundamental misalignment of purposes prevented any meaningful agreement from being reached during these talks, as neither side was addressing the same core agenda.