As Sri Lanka’s military takes control of key territory held by the Tamil Tiger rebels, Chris Morris in Colombo reports on a deepening mood of determination and defiance on both sides of the conflict. Getting through to the Tamil Tigers isn’t easy these days. Their world is getting smaller. Surreptitious messages. Crackling phone lines. “Can I talk to him now?” “It’s difficult.” “Why?” “There’s heavy shelling. Please call again later.” Eventually I make a connection with the Tigers’ political leader, B Nadesan. He sounds remarkably calm for the spokesman of a group which has lost most of the land and all the main towns it controlled a year ago.