He said the brutal nature of the killing of two Indian soldiers by Pakistanis shows the "real design behind this attack."
"As far as this unprovoked attack is concerned, it is now incumbent on the government of India, since Pakistan still continues to deny it, to collect the entire evidence including the identity of those Pakistani Army officials and the groups guarding particular area who are responsible for this assault, place all these facts before the international community so that Pakistan can be named and shamed before the world at large for this brutal attack," Jaitley said.
"This attack is also a warning to India. A warning that in dealing with Pakistan, it is now extremely important that the government clearly defines the red lines. It has to be very firm, very cautious and very clear in how to deal with Pakistan," he told reporters in New Delhi.
Government "must clearly define the dos and don'ts particularly the red lines," he said.
In a "provocative" attack on Tuesday, Pakistani regular soldiers crossed into Indian territory in Poonch sector of Jammu and Kashmir and ambushed an Indian patrol killing two soldiers, one of whom was decapitated.