Trailing by 0-2, Clarke warned India of a possible turnaround in the last two matches in Mohali and Delhi.
"It is not in our nature to give up without a fight. We have eery chance of making a comeback and levelling the series 2-2. We feel if we win one we can win two," an optimistic Clarke said about his team's chances.
"We have to win the next two Tests to level the series and that is our main focus. But obviously it is going to be tough as India are playing really good cricket at the moment."