Alva Review-Courier -

ANKARA, Turkey (AP) — Turkish President Recep Tayyip Erdogan accused the U.S. national security adviser of making "a very serious mistake" Tuesday by demanding that Ankara guarantee the safety of Kurdish fighters in northeastern Syria before the U.S. withdraws its troops from the war-torn country.

A strained morning of negotiation in Turkey ended without assurances of protection for forces that fought alongside U.S. troops against the Islamic State group, and indeed brought them fresh new threats from Turkey. The diplomatic setback raised fresh questions about how the U.S. would protect its al...