[A dinghy of refugees and migrants is towed by a Turkish Coast Guard fast rigid-hulled inflatable boat on the Turkish territorial waters of the North Aegean Sea]The number of migrants reaching the European Union by sea fell by two-thirds in 2016 due to a migration deal with Turkey but arrivals in Italy from north Africa hit an all-time high, the EU said on Friday. The deal concluded in March provides Turkey with billions of euros as long as it keeps refugees on its territory and stops people smugglers from moving them across the Aegean to Greece. It also involved promises to Ankara of financial aid, visa-free travel to much of the EU and accelerated membership talks, which have all been put on hold because of Turkey's crackdown on critics after a failed military coup last July.