 Nyorai kuenderera mberi kweiyi ndima - Muna Gumiguru 2004, Kassar akagadzwa gurukota rezvehupfumi nekutengeserana muhurumende inotungamirwa nemutungamiri wehurumende Omar Karami, achitsiva Marwan Hamadeh semutungamiri wezvehupfumi. Kutonga kwake kwakatora kusvika pagore ra2005, apo Karami akasiya basa nekuda kwekumanikidzwa kwakaitwa nevanhu veLebanese sekuratidzira pamusoro pekuurayiwaraRafik Hariri. Kassar akatsiviwa naDemianos Khattah pachigaro. Gare gare Kassar akashanda semutungamiri wehurumende muhurumende inotungamirirwa nemutungamiri wehurumende Saad Hariri kubva munaNovember 2009 kusvika muna2011. Kassar aive mumwe wemitezo yemakurukota akagadzwa nemutungamiri weLebanese Michel Suleiman. 