Firming up cooperation against terrorism, India and the US on Tuesday vowed to make "joint and concerted efforts" to dismantle safe havens for terror and criminal networks like Dawood Ibrahim's D-Company, Lashkar-e-Toiba, Jaish-e-Mohammed, al Qaeda and Haqqani network. With this, India may seek US' help for extradition of Dawood Ibrahim, the mastermind of 1993 Mumbai blasts.