intra-NATO fighting

Rex Tillerson expected to face off with Erdogan

American Secretary of State Rex Tillerson is expecting an extremely difficult confrontation with NATO ally Turkey, where President Recep Erdogan has increased his Anti-American rhetoric, essentially threatening US troops in Syria. The Turkish government roundly hates the Kurds, and fears that the American aid to the ones in Syria will result in their helping Turkish Kurds push for their own independence.
Erdogan is reported giving a strong threat: