But by placing a stamp of approval on "acceptable" ways to make war, they legitimate terrible violence.
In the view of some human rights advocates, the 50-page memorandum set the stage for abusive interrogations by both the Central Intelligence Agency, which had sought the legal opinion, and the Defense Department, by giving a stamp of legality to even extreme interrogation measures.
The certification, preceded by the words "Produced by," will serve as a stamp of approval of sorts for those who engaged in the complicated decision-making and advisory functions of what the guild views as a genuine producer.
To secede from New York, the Upstate New York Towns' Association's proposal would have to be passed by both the New York and Pennsylvania State Legislatures, and then receive a stamp of approval by the federal government.
Being loved by hipsters is not necessarily a stamp of approval to boast about, which explains Gerwig's caution when talking about the demographic that has made the film a big hit in New York City.
"The film without her would still be good with all the other actors," he was quoted by MailOnline, "but it puts a stamp of quality with her in it".
Many of the articles in Sky & Telescope are written by professional astronomers and so bear a stamp of authority.
The Briton's rapid ascent in recent months was given a stamp of approval by Roger Federer on Wednesday, when the five-time US Open champion chose to practise with him.
Box of six, £2 Perhaps a surprising winner in an field including some august names, this year's premium Asda offering has been given a stamp of approval by chefs from Leiths School of Food and Wine.
The Liberal Democrat science spokesman, Dr Evan Harris, says the NHS is wrong to spend money on unproven treatments and effectively to give them a "stamp of approval" by doing so.
