"With pain and anguish, I have decided to quit Congress," he stated, adding that "self-respect" was important for him but declined to spell out the next step, saying he would have to think about it.
Stating that Congress had suddenly discovered "I was past my age," 84-year old Krishna said, "Unfortunately it is somebody else who makes up the mind. It is somebody else who decides. Hence I felt for sometime now that Congress does not need me."
The former External Affairs Minister said he had seen both good and bad and tasted sweetness and bitterness in the party but he had always remained steadfast in his loyalty.
"But it now seems the Congress is in a confusion whether it needs mass leaders or not. Just managing the situation seems to be good enough," he said.
With his move, Krishna had stunned the party, which is facing challenges both at the central and state levels.
Caught off guard, the central and state leaders tried to persuade Krishna till the last minute before his press conference to step back, but he made it plain to them that he remained firm on his decision.
"I reminded the leadership that I am still in existence," he said on a sarcastic note, adding, they said they took note of it.
Krishna also said he was not retiring from politics, adding, "The word retirement is not in my dictionary."
He said Sonia Gandhi had given him "special respect" but took veiled digs at the central leadership.
To a query if he felt Rahul Gandhi was inefficient and a
leadership change was needed, Krishna said, "Being a national party, we look to the President not to Vice-President, General Secretary and some others... Given my seniority in the party, at this stage, I should look to the President, not to others."
"They will decide whether there is a future in the Congress party or not, but anyway Congress with a long history of 129, 130, 131 years... Well nobody is counting. You can as well say Congress is going to be there," he added.
To a query about Congress' credibility, he said, "I don't know whether it is complimented by credibility. That is the big question mark."
Krishna made no secret of his unhappiness over the way he had to step down as Minister for External Affairs in 2012 just days before a major ministry revamp, saying he expected a 'graceful' exit.
Asked if he would reconsider his decision to quit Congress if Sonia Gandhi makes a request, he said that he would not do it.
"It is a question of self-respect and pride," he said.
He dismissed a question if he was an aspirant for the post of the country's Vice-President and whether he would meet BJP leaders, saying, "Do you think I have gone crazy."
However, he was in a virtual hibernation for the last two years being unhappy over being sidelined both at the central and state levels.
