Warning comes after Turkish leader reached agreement with Putin for removal of Syrian Kurdish fighters in area; also repeats threat to send refugees to Europe

Turkey and Kurdish-led SDF also fighting despite truce; clashes underscore risk of spiraling violence as multiple armies jostle for position in volatile border region

Without firing a shot, dictator's forces are returning to towns and villages in northeastern Syria where they haven't set foot for years

Kremlin tells Kurdish fighters to pull back from frontier or face being 'steamrolled' by Turkish forces

Hours before Ankara set to resume offensive against US allies, leaders of Turkey and Russia agree to create 20-mile deep area free of Kurdish fighters

Turkish leader continues threats ahead of meeting with Putin; dismisses French request for ceasefire extension, claiming Paris talking to 'terrorists' but not to him

Mark Esper says troops going into Iraq will have two missions -- to defend Iraq and perform 'a counter-ISIS mission'

Turkish president threatens Kurdish fighters if they don't withdraw from planned safe zone by Tuesday evening

US president declares truce deal a 'tremendous success,' as Erdogan threatens to resume offensive and at least 14 civilians killed in Friday airstrikes by Turkey

Turkish president says he 'cannot forget' Trump's letter, but says for now mutual 'love and respect' between two leaders prevents him keeping it on agenda