The European Union (R) and US flags are seen on March 10,2014 at the EU Headquarters in Brussels. A fourth round of EU-US trade talks will kick off in Brussels to day. The talks will help pave the way for a future trade and investment deal, known as the Transatlantic Trade and Investment Partnership, or TTIP. Negotiators will discuss different aspects of the agreement, including: trade in services; public procurement; rules of origin; technical barriers to trade; agriculture; and customs and trade facilitation. AFP PHOTO / GEORGES GOBET        (Photo credit should read GEORGES GOBET/AFP/Getty Images)