Rio de Janeiro's Eduardo Paes, right, talks with Nawal El Moutawakel, head of the International Olympic Committee (IOC) Evaluation Commission, center, and International Olympic Committee (IOC) Executive Director for the Olympic Games, Gilbert Felli during a visit to the Olympic Park in Rio de Janeiro, Brazil, Thursday, March 20, 2014. With IOC officials in Rio de Janeiro on to monitor progress on the 2016 Olympics, the city's mayor acknowledged that work on a large cluster of venues is far behind schedule. Paes made his remarks as Nawal El Moutawakel reminded Rio officials that the recent Sochi Winter Olympics showcased "meticulous planning." She urged Rio organizers to meet deadlines and to explain clearly to the Brazilian public why it should back the games. (AP Photo/Silvia Izquierdo)