The European Union says this week's planned summit with Russia has been postponed.
The Dutch foreign ministry, speaking for the rotating EU presidency, said Monday Moscow wants to hold the summit after the new EU Commission has been confirmed.
The European Parliament is expected to vote on the bloc's new executive body when it meets on November 18.
Facing a likely veto by lawmakers, the new commission president, Jose Manuel Barroso, withdrew his designated commission in October.
No date has been set for the summit, but diplomatic sources say it may be in December.
The bloc had hoped that a wide-ranging cooperation pact with Russia would be signed at the meeting, but some differences on the issues remain.
Some information for this report provided by AFP, Reuters.