Turkey's crackdown on President Tayyip Erdogan's main rival and silence on what reforms might follow the end of a 40-year conflict with Kurdish militants are stoking distrust among Kurds anxious to see what a fragile peace process may bring. At stake is a potential boost to NATO member Turkey's political and economic stability that may encourage moves to ease tensions elsewhere in the Middle East. Failure could fuel economic and social woes in the country's less developed southeast and add to a death toll already exceeding 40,000.