Flood-stricken Pakistan urgently needs more international aid to combat potential instability and extremism, Senator John Kerry said, as hunger and disease threaten millions of victims. In a commentary in the International Herald Tribune, Kerry, who heads the Senate Foreign Relations Committee, said that the international community was not meeting its responsibilities toward Pakistan, where floods have killed more than 1,600 people and left at least 6 million homeless. "The danger of the floods extends beyond a very real humanitarian crisis," Kerry wrote in Monday's edition. "A stable and secure Pakistan, based on democracy and the rule of law, is in all of our interests. Pakistan has made enormous strides in combating extremism and terrorism -- at great sacrifice. But its ability to keep up the fight requires an effective response to this crisis."