RWANDA is one of 172 countries that have confirmed participation in the forthcoming IAAF world indoor championships in Istanbul, Turkey which will take place from March 9-11.It is expected to be the biggest competition in the history of the event surpassing the previous record of 147 countries set four years ago in Valencia.  Rwanda will be represented by two athletes; Robert Kajuga and Claudette Mukasakinda in the 3000m.A total of 1,299 athletes and officials are expected to attend what will be the IAAF’s most important event of the 2012 World Athletics Series.The World Indoor Championships, which were first contested under the guise of the World Indoor Games in Paris in 1985 when 69 nations took part, attracted 142 nations for their last edition in Doha 2010.