President Obama responded to the news of his Nobel Peace Prize the right way. He said he was humbled, acknowledged that the efforts for which he was honored are only beginning and pledged to see them through, not on his own but in concert with other nations.

There cannot have been unbridled joy in the White House early Friday. Mr. Obama’s aides had to expect a barrage of churlish reaction, and they got it. The left denounced the Nobel committee for giving the prize to a wartime president. The right proclaimed that Mr. Obama sold out the United States by engaging in diplomacy. Members of the dwindling band of George W. Bush loyalists also sneered  with absolutely no recognition of their own culpability  that Mr. Obama has not yet ended the wars in Afghanistan and in Iraq.

Certainly, the prize is a (barely) implicit condemnation of Mr. Bush’s presidency. But countering the ill will Mr. Bush created around the world is one of Mr. Obama’s great achievements in less than nine months in office. Mr. Obama’s willingness to respect and work with other nations is another.

Mr. Obama has bolstered this country’s global standing by renouncing torture, this time with credibility; by pledging to close the prison camp at Guantánamo Bay, Cuba; by rejoining the effort to combat climate change and to rid the world of nuclear weapons; by recommitting himself to ending the Israeli-Palestinian conflict; and by offering to engage Iran while also insisting that it abandon its nuclear ambitions.