New Delhi, Apr 14 (Agencies) :  Congress spokesperson Sanjay Jha posted a series of tweets today describing Atal Bihari Vajpayee as "the weakest PM India ever had", just three days after his party website praised the BJP veteran.

"The weakest PM ever was AB Vajpayee, who wanted to sack Mr Modi for the ghastly Gujarat massacre, but succumbed to BJP bullying. The weakest PM India ever had was AB Vajpayee who gave Kandahar terrorists an escort-service,and allowed Parliament to be attacked," Mr Jha tweeted.

The tweets intensified a new war of words over the memoirs of Prime Minister Manmohan Singh's former media adviser Sanjaya Baru, who says Congress president Sonia Gandhi oversaw all major decisions of the government and the PM was "defanged."

"Dear Mr Modi/Jaitley, Just asking, but since you are so convinced about Sanjaya Baru, how about DG Vanzara's letter-bomb? Right?" Mr Jha hit back, referring to the letter of a Gujarat police officer jailed in a fake encounter case, claiming that he had acted on the Modi government's orders.

The Congress spokesperson followed it up with a flurry of tweets that began with the words "the weakest PM ever was AB Vajpayee..."

"The weakest Prime Minister that India ever had was AB Vajpayee. Gen Musharraf spent a night on Indian soil, while the PMO and NDA snored," he tweeted.

Mr Vajpayee, the BJP's only prime minister so far, retired from active politics in 2006.

Last week, the Congress used Mr Vajpayee to target Narendra Modi, the party's prime ministerial candidate, on its website.
 
"No leader in the BJP can match the stature of former Prime Minister Atal Bihari Vajpayee," the Congress' message said, and invoked Mr Vajpayee's reported rebuke to Mr Modi during the 2002 riots in his Gujarat that "Rajdharma (ruler's duty) should be followed.

The BJP today said the Congress is a 'confused party' facing a leadership crisis.

"Sanjay jha is the weakest spokesperson of Congress," said journalist MJ Akbar, who joined the BJP recently. "I can only feel pity for him."