Animosity between PC, Swamy spans decades:
Pathan vs Sicilian
A brilliant analysis of the reasons behind the acrimony between Swamy and Chidambaram by M D Nalapat, one of the impartial journalists of India. Nalapat reveals that Chidambaram boasted about his association with Swamy at Harvard. Nalapat interestingly says that while Chidambaram acts like a Pathan, Swamy acts like a Sicilian.