In a speech at the award ceremony in the Norwegian capital, Obama said violent conflict would not be eradicated “in our lifetimes”, and there would be times when countries would need to fight just wars. “Where force is necessary, we have a moral and strategic interest in binding ourselves to certain rules of conduct. And even as we confront a vicious adversary that abides by no rules, I believe that the United States of America must remain a standard bearer in the conduct of war,” he declared. While acknowledging the message of non-violence of Gandhi and Martin Luther King, Obama, the first sitting US president in 90 years to win the Nobel Peace Prize, said sometimes force was necessary. “I face the world as it is,” Obama said, insisting that he is obliged to protect and defend the US. “A nonviolent movement could not have halted Hitler’s armies. Negotiations cannot convince al-Qaida’s leaders to lay down their arms,” Obama said. “To say that force is sometimes necessary is not a call to cynicism, it is a recognition of history.” At a news conference earlier, Obama reaffirmed that US troops would begin transferring responsibility for Afghan security to local forces in July 2011 but said there would be no “precipitous drawdown.” Days ago, Obama announced that he was ordering 30,000 more US troops to Afghanistan, disappointing those who had hoped that he would disengage America from an increasingly unpopular war. The Nobel peace committee has been criticized for awarding Obama the prize before he has any major accomplishments in international relations. But its chairman, Thorbjørn Jagland, praised Obama for doing more than anyone else this year to promote peace, citing his efforts to reach a new agreement on nuclear weapons with Russia. Acknowledging the controversy surrounding his prize, Obama said: “I have no doubt that there are others who may be more deserving. My task here is to continue on the path that I believe is not only important for America but important for lasting peace in the world.”