Tewari said no civilised world would tolerate such an attack, which was "very saddening".
"The external affairs ministry is in touch with Pakistan and all possible efforts are being made to exert pressure on Pakistan to extend best medical treatment to Sarabjit," he said.
On the Chinese incursion in Ladakh, he said India is trying its best to deal with it in a constructive manner.
He asked the media to be "extremely sensitive and responsible" when it comes to reportage of matters of national security.
Tewari, who was here to campaign for Congress candidates in the Karnataka elections, attacked the BJP government on the issue of illegal mining during its tenure which, he said, has caused a loss of Rs. 50,000 crore to the state exchequer.
The average gross state domestic product of Karnataka between 2008 and 2012 is 5.8%, while that of the country during 2007-2012 was 8.2 per cent, Tewari said.