The United States has informally raised with Turkey the unlikely possibility of sending its Russian-made S-400 missile defense systems to Ukraine to help it fight Russian forces, according to three sources familiar with the matter.
U.S. officials have floated the suggestion over the past month with their Turkish counterparts but no specific or formal request was made, the sources told Reuters. They said it also came up briefly during Deputy Secretary of State Wendy Sherman's visit to Turkey earlier this month.
The idea, which analysts said was sure to be shot down by Turkey, was part of a wider discussion between Sherman and Turkish officials about how the United States and its allies can do more to support Ukraine and on how to improve bilateral ties.
