Chandigarh, March 16 -- The Bharatiya Janata Party's (BJP's) "silence" regarding Jannayak Janta Party's (JJP's) electoral promise to increase old age pension to Rs.5,100 was the only reason behind break in the BJP-JJP alliance in Haryana, former deputy chief minister Dushyant Chautala said here on Friday while desisting from sounding critical about the BJP....