GS PAPER 2 IAS MAINS 2018 basically current affair oriented and very simple and traditional question from indian polity like CAG,EVM,NCSC,PARLIAMENTARY COMMITTEES.
Social aspect includes health for all,e-gov,finance commission and term of reference,political tussle of delhi , PRI.
INTERNATIONAL relation was very much current oriented toward west asia,iran-usa,israel.FOREIGN RELATION in west asia is becoming complex due to interference by USA that is creating headache for india,upsc want to know how much you know about it.
Paper focus on burning and tough issues for india. Citizen charter,WTO RELEVANCE,REAL REASON FOR FOOD INSECURITY. These are all time favourite topic but upsc will ask questions from all in same year you cannot expect it.