The Indian Foreign Service (IFS) is the diplomatic service of the Government of India. The selection process for candidates aspiring to join the IFS involves a competitive examination called the Civil Services Examination (CSE), conducted by the Union Public Service Commission (UPSC). The CSE is a three-stage process that consists of the following steps: Preliminary Examination: The first stage is the Preliminary Examination, which consists of two objective-type papers: the General Studies Paper I and the General Studies Paper II (Civil Services Aptitude Test or CSAT). This examination serves as a screening test, and the marks obtained in the Preliminary Examination are not considered for the final ranking. Only candidates who qualify in the Preliminary Examination are eligible to appear for the next stage. Main Examination: The Main Examination is the second stage and consists of a written examination and an interview. The written examination consists of nine papers,...