 Complete the following phrase:  During the course of the 1991 election campaign, former Prime Minister Rajiv Gandhi was assassinated. The party elected P.V. Narasimha Rao as the party president. It was expected that the party president would become the prime minister in the event of a Congress victory. However, Pawar at that time had talked about the distinction between party president and prime minister. Also since the Congress contingent from Maharashtra was the largest, Pawar felt he had a legitimate claim for the post of prime minister. However, Pawar eventually decided not to enter the contest, and the Congress Parliamentary Party party MPs uimously elected P.V. Narasimha Rao as their leader, and he was sworn in as prime minister on 21 June 1991. Rao named Pawar as defence minister. On 26 June 1991, Pawar took over that portfolio, and held it until March 1993. After Pawars successor in Maharashtra, Sudhakarrao Naik, stepped down after the disastrous handling of the Bombay riots, Rao asked Pawar to serve again as chief minister of the state. Pawar was sworn in as chief minister for his fourth term on 6 March 1993. Almost immediately, Mumbai was rocked by a series of 