[Keilar:] The Olympic trials are underway and opening ceremony in Rio less than six weeks. Brazil has been plagued with a series of issues that could threaten the games. CNN senior international correspondent, Nick Paton Walsh, is live in Rio. Nick, we have heard some major ones, Zika and security, that are dominating the conversations surrounding the Olympics. What can you tell us about this?
[Nick Paton Walsh, Cnn Senior International Correspondent:] It is remarkable, Brianna, at this stage to have so many issues mounting and questions unanswered. Let me try and pick through some of them for you. First of all, the most recent shock we have had that one of the key elements behind ensuring a clean game, free of doping, the Brazil Anti-Doping Board will be testing the athletes throughout. They had their certification taken away by the World Anti-Doping Agency just before this weekend. So real doubt they may be ready to function in the Olympics. What does that mean for doping? That's one detail. But there's a broader as well. Concern over the pace of which infrastructure is being completed. One key subway extension that's supposed to go from the beaches behind me to the Olympic Park to cut the visitors through the traffic, get to the games quicker. That will only be ready four days ahead. A tight schedule there. There is the broader backdrop of security. Athletes here who are training having been mugged in some of the most busy tourist areas, one at gunpoint. The board of security for visitors, they promised a lot of security officers on the street, maybe 100,000. But there is another issue that may impact the government's ability to deliver on that. That's the financing of Rio state itself. They suddenly, 10 days ago, had to declare a state of emergency because of what they called a financial calamity. They got an emergency bailout, nearly $1 billion from the federal level here. But there are concerns about what that is doing. The ability for Rio, which should be providing a sort of relaxed, wonderful atmosphere it is famous for, for those athletes coming to the game, it is going to be the back drop. The games are going to happen. Is everything going to be in place in the way that everybody had hoped Brianna?
[Keilar:] Nick Paton Walsh, thank you so much for that overview in Rio. For more on the games and the controversies surrounding them, I'm joined by Sidney Levy. He is the chief executive officer of the 2016 Olympic Games in Rio. There has been a series, Sidney, of problems. Nick Paton Walsh said an athlete was mugged in broad daylight in a very touristy area. You would expect that may not happen. Perhaps a sign that security is very much a challenge. One of the hospitals, which is one of the five where athletes could be treated, was actually stormed by armed gunmen about a week ago. That's a big challenge. How do you make sure that athletes and spectators are safe?
[Sidney Levy, Chief Executive Officer, 2016 Olympic Games, Rio:] It's our job to protect the athletes and the people. That's what we have to do. We bring 85,000 people, from the federal police, from the army, to take over Rio and protect everybody. We did that for the world cup with hundreds of thousands of people. We did that when the pope visited. There were two million people in Rio in the streets and nobody got mugged. We are going to do it again. It is our job to protect everybody.
[Keilar:] Do you think people are making too much of these concerns? Do you think that they should not be as concerned as they are, or are you really taking these concerns at face value?
[Levy:] Of course, we do extreme measures for games. It is not normal measures. The games are an extraordinary event and because of that we do extraordinary measures. That's what you do.
[Keilar:] I want to ask you, were some pictures we were showing there of polluted water. I know there are some areas where there is even sewage. That was supposed to be taken care of. Now, there is investigations into whether money was sort of siphoned off, wasn't used to clean up the areas where there will be sailing events. What can you tell us about that?
[Levy:] We ran two tests in '14 and '15, same dates exactly, and it was very good. There was not a single athlete sick or anything. We will do that again. We have five competitions and we're tracking them every day. It is our job to protect the health of the athletes. We are pretty comfortable we can do that.
[Keilar:] Speaking of the health of athletes, Zika is a major concern. You have some athletes, like golfer, Rory McIlroy, and this is significant because it now going to be part of the games. But he has pulled out of competing because he worries about Zika. What measures do you take to make sure athletes and spectators are aware of this problem and what they can do to try to avoid the risks?
[Levy:] Mosquitoes die in the winter. We are now going into the winter. It is proved that the number of attacks by mosquitoes during those months drop dramatically. The chance to get Zika during the games is one to one million. We are pretty sure it is not going to be a threat.
[Keilar:] Some of these problems I've described have detoured people from saying I am going to Rio. It is a beautiful place, a huge tourist destination. Some people have said, I don't think I am going to these Olympic Games. You see ticket sales depressed. Is there a strategy to try to boost that before the games get going?
[Levy:] The Olympics is just a wonderful movement, a peace movement where Israelis and Palestinians have breakfast at the same table. Rio is a wonderful city where everybody should come. You have to come. We all do things together, just like last time. You have to come. You cannot wait.
[Keilar:] Once in a life time. You do have a tough job, sir. Sidney Levy with the Rio Olympics 2016. Thank you so much for being with us.
[Levy:] Thank you.
[Keilar:] Coming up, Russian agents reportedly intimidating U.S. diplomats by entering their homes and rearranging their furniture. Bizarre, scary claims from secret State Department memos, next.