The Afghan government expressed regret over the resignation of US Defense Secretary Donald H. Rumsfeld, but the US Army here said the move would not affect their counterterrorism mission. "We are sad that he has resigned," Jawed Ludin, the chief of staff for the Afghan President Hamid Karzai, told The Associated Press late Wednesday. "We in Afghanistan are very pleased and very grateful for (Rumsfeld's) support for Afghanistan," Ludin said. He added that Kabul did not expect the United States to changes its policy toward the country. "We are confident that the commitment of the United States and its people will be the same," Ludin said.