14 October 2016, Rome--- The official celebration of World Food Day at FAO Headquarters coincides with a meeting of mayors from cities across the world. In October 2015, over 100 mayors committed to the “Milan Urban Food Policy Pact”, the first international protocol that calls for cities to develop sustainable food systems that grant healthy and accessible food to all, protect biodiversity and reduce food waste.The mayors, united today for a second time, discussed their collaborative efforts in developing sustainable food systems in cities worldwide, and shared experiences and best practices. FAO is supporting this initiative by helping to establish indicators that will measure the impact of the Pact, and by exchanging best practices among cities.