Krishna said that, Kasab's sentencing was a message to Pakistan that the justice will be done to those who wage war against India.
"In the light of the findings of the trial judge and in the light of the offences that Kasab had committed, I think the judge has come to the most appropriate conclusion which could send a positive message that anyone who wants to wage a war against India is caught and after going through a fair trial, he will find that justice will be meted out," he told reporters while commenting on sentencing of Kasab.
The External Affairs Minister said that the sentence against Kasab was concrete evidence of his role in the 2008 Mumbai terror attacks.
On whether India would seek for the other accused based in Pakistan, Krishna said that the request would certainly be made to Pakistan.
"Certainly we will keep engaging Pakistan that in the light of this sentence and in the light of the investigations that has preceded in connection of these trials, a number of others who acted as co-conspirators will also have to be extradited and they should be brought to justice."
Jamaat-ud Dawa chief Hafiz Saeed is one of the co-conspirators in the case against whom India has been seeking Pakistan's action.