NATO member states, especially Europeans, should aim for a coalition of the willing to send troops to Ukraine, consisting of a core group of the U.K., France, Germany and Poland, with support by the United States.

Nov 29 (Reuters) - Ukrainian Foreign Minister Andrii Sybiha has urged his NATO counterparts to issue an invitation to Kyiv at a meeting in Brussels next week to join the Western military alliance, according to the text of a letter seen by Reuters on Friday.