ISTANBUL – Following the recent safe return of 46 Turkish hostages held by the Islamic State, hopes were raised in the United States that Turkey would finally commit to joining the US-led coalition now fighting the group. But Turkey’s willingness to contribute to the coalition remains constrained by the legacy of its ill-fated Syria policy, as well as by a fundamental strategic disconnect between President Recep Tayyip Erdoğan’s government and US President Barack Obama’s administration.