Step 1: The case in brief:
India argues its sheer scale — population, economy, and democratic legitimacy — entitles it to a permanent seat that the 1945-era Council composition does not reflect.
Step 2: Supporting evidence:
Decades of active UN peacekeeping contributions and a demonstrated capacity for regional and global responsibility strengthen this claim.
Step 3: The reform argument:
Because the Security Council's structure has barely changed since the UN's founding while global power has shifted, India (with allies in the G4) pushes for expansion to include it as a permanent member.