reporter: dmitry sukharev works for transparency international in st. petersburg. he is heading to court. vladimir litvinenko, one of the most powerful men in russia, is suing the organization. dmitry: litvinenko wins every case. reporter: always? realal? dmitry: yes, of course. >> the rector of the st. petersburg state mining university. reporter: litvinenko heads t destst tecical u unirsity inin rurussia. itit's very prestigis jojob, a it is alleged g got iin 1994 ththankso vladadim putin, , o was s the time deputy moror of st. petersbuburg. it's also algeged litvinkoko helplped pin witith s doctoror disserertation. he is nonow a manager r of the presidident's bid toto be re-eld onon mar the 1 18t presidident putin: i it is nico knowow that we havave engineeg univiversities of f such hih qualitity in russia.a. reporter: transparency claimed that litvinenko misappropriated funds. he is now suing for defamation the anti-corruption ngo and some journalists who reported on the allegations. he's demanding damages totaling close to a million euros. we wanted to film the