who does n't feel a personal sense of pain and regret any time any civilian casualty occurs , '' he said . `` Speaking as an official of the American government , I can say there is no one who works harder than the United States does to minimize such casualties . `` I know as a matter of absolute certainty of operations that have been canceled precisely because there was a risk of civilian casualties , '' he added . `` I think there is no question there has been what one Afghan official referred to as ` sort of a bumpy time ' over this issue in the last few weeks . I think that it has never threatened the underlying relationship of confidence between our two countries and between our peoples or between our military and the people of Afghanistan . `` That said , we are certainly committed to taking the steps necessary to ensure that such casualties are reduced to the absolute minimum and to working closely , even more closely , with the Afghan government to successfully carry out the military mission . '' The ambassador said the United States has made changes in
WASHINGTON -LRB- CNN -RRB- -- The United States ambassador to Afghanistan , William Wood , said Friday that changes in communications with Afghan military forces have been made in the aftermath of a disputed U.S. air raid on an Afghan village . Civilians are overcome with emotion outside a home destroyed by a U.S. airstrike in Afghanistan . And despite Afghanistan 's outrage over the loss of life , he said , the incident has not undermined the nations ' relationship . The Afghanistan government has said that as many as 90 civilians -- including many children -- were killed in the August 22 air attack on a village in the Shindand district of Western Afghanistan . The United States had said that only seven civilians died , along with dozens of insurgents . A number of investigations into the incident are under way , including a `` senior level '' review by the United States . `` People who are reviewing our findings have been in Afghanistan for a while , and I do n't know when they will complete their review , '' Wood said at the State Department late Friday . `` There is no American involved