Speaking at an interview, Chidambaram said, "My assessment of the vulnerability is that it has remained the same since 26/11. It has not diminished nor has it enhanced."
India is spending millions on new security measures, from commando hubs in cities to navy patrols and better intelligence gathering, he said adding that 'India had learnt its lesson'.
"Our capacity to deal with it (the terrorist threat) has increased significantly."
"If there is another terror threat or a terror attack of the kind we saw in 26/11, India's response will be swift and decisive," Chidambaram added.