City diplomacy is an indispensable tool for city administrations and local governments to prosper in a global age. Establishing sister city (twinning) relationships is very fundamental for building an effective city diplomacy. Sister city agreements offer considerable opportunities for exchange of knowledge and experience and international cooperation between cities. More importantly, they can help promote inter-cultural dialog, respect for diversity, and peace. While engaging in various activities with international partners beyond the current network of its sister-and-friendship cities, Shiraz is actively trying to establish new sister city relationships with cities from across the globe and warmly welcomes sister city proposals.