The BJP on Tuesday accused the Congress of "lowering the morale and prestige" of the forces by seeking evidence of the airstrike carried out by the Indian Air Force on a Jaish-e-Mohammed terror camp in Pakistan.
Union minister and BJP leader Ravi Shankar Prasad alleged that senior Congress leaders were speaking in the "language of Pakistan".
"They are not speaking in isolation. They have the blessings of (Congress president) Rahul Gandhi and (UPA chairperson) Sonia Gandhi," Mr Prasad said, naming senior Congress leaders P Chidambaram, Kapil Sibal and Digvijaya Singh.
No foreign country has sought evidence of the air strike, the BJP leader said, adding that Congress leaders do not believe in Indian media reports.
By seeking proof, he said, the Congress was "lowering the morals and prestige" of the security forces.
Mr Prasad also attacked West Bengal Chief Minister and Trinamool Congress leader Mamata Banerjee. "Mamata ji, you have seen struggle. What is wrong with you?"
One week on, there is no clarity on the number of terrorists killed in the strike on a Jaish-e-Mohammed camp in Balakot.
On the day of the strike, Foreign Secretary Vijay Gokhale said a "very large number of terrorists" were killed in Balakot. On Monday, IAF chief BS Dhanoa said the Air Force does not count human casualties and it is for the government to provide details on the death toll.
Government sources had said up to 350 terrorists were killed, BJP president Amit Shah later put the toll at 250 and some media reports indicated the damage was minimal.
But there has been no official statement on the number of casualties.
Congress spokesperson RPN Singh on Monday counter-accused the BJP and its leaders of spreading misinformation and "false propaganda" over the air strike ahead of elections and said the people of the country would give them a fitting reply.
"It is extremely shocking and tragic that the prime minister of this country is pointing fingers at opposition parties for questioning the Army or the Air Force," he said.