BERLIN  NATO’s senior military commander has proposed that the alliance’s soldiers in Afghanistan shoot drug traffickers without waiting for proof of their involvement with the Taliban insurgency, according to a report in the online edition of Der Spiegel magazine.

The commander, Gen. John Craddock of the United States, floated the idea in a confidential letter on Jan. 5 to Gen. Egon Ramms, a German officer who heads the NATO command center responsible for Afghanistan, Spiegel Online reported Thursday.

General Craddock wrote that “it was no longer necessary to produce intelligence or other evidence that each particular drug trafficker or narcotics facility in Afghanistan meets the criteria of being a military objective,” the news magazine reported. A NATO official, speaking on condition of anonymity, confirmed the wording of the letter, and several NATO officials said publicly on Friday that no such orders had ever been given to NATO troops.

Still, the proposal was widely criticized, with politicians here saying that it would flout international law and alter NATO’s mission in Afghanistan. Such an order, they said, would signal a major shift in how the alliance intended to deal with the Afghan insurgency, along with the opium trade that finances the Taliban and other militant groups.