elect Barack Obama Monday announced his national security team, nominating former rival Hillary Clinton as secretary of state and asking Defense Secretary Robert Gates to stay on in that role. Obama, who takes office on Jan. 20, has pledged to be more inclusive and says he has a vision of renewing America's leadership in world affairs after President George W. Bush's eight years in office. A statement from his office said Obama had also named Arizona Gov. Janet Napolitano as homeland security secretary, Eric Holder as attorney general, retired Marine Gen. James Jones as national security adviser and long-time adviser Susan Rice as ambassador to the United Nations. Obama said he aimed to implement a “new dawn of American leadership” that integrates military, diplomacy, law enforcement and the economy. “The team that we have assembled here today is uniquely suited to do just that,” he said in a statement. “They share my pragmatism about the use of power, and my sense of purpose about America's role as leader in the world,” Obama said. Clinton, who waged a fierce battle against Obama for the Democratic presidential nomination, has served more than four decades in public service. Aides have said Obama admires Clinton's work ethic and also believes the former first lady's star power would boost his vision of improving America's global standing.