Brazil will buy 34 1A2 Gepard anti-aircraft tanks from Germany to provide security at World Youth Day and major sporting events, officials said Thursday. The tanks are likely to be used when Brazil hosts the World Cup next year and the 2016 Olympic Games. A Defense Ministry statement said the contract would be signed in the coming days with the total value still under negotiation. The used, 47.5-tonne tanks, which were upgraded in 2010 and fitted with new radar systems, will be able to operate until 2030, the G1 news website quoted anti-aircraft artillery brigade chief General Marcio Roland Heise...