A U.S. official said Washington is 'cautiously optimistic' about upcoming
Russia-Ukraine peace talks in Abu Dhabi, saying there is an opportunity to make
significant progress and that recent weeks have shown some flexibility from both
sides on territorial issues. The official warned territorial agreements are
unlikely before security guarantees are settled. The U.S. said European allies
will play a key role in any post-war security arrangement and wants Russia to
agree to include European representatives in the next round of talks after Abu
Dhabi.
