From the lead front-page news article in today's New York Times, about Russian missile tests that America says violate a treaty:
Such tests are prohibited by the treaty banning medium-range missiles that was signed in 1987 by President Ronald Reagan and Mikhail S. Gorbachev, the Soviet leader at the time, and that has long been viewed as one of the bedrock accords that brought an end to the Cold War.
Note the use of the passive voice: "has long been viewed." Who is doing the viewing? The Times doesn't say, which is a way of inserting into the news article a highly contested and, in my view, groundless, opinion, which is that it was arms control treaties that "brought an end to the Cold War," rather than, say, the Reagan-era military buildup, or the collapse of Communism because of its own failures as an economic and political system, or the fall of the Soviet Union because of the opening of the Berlin Wall, the rise of Solidarity in Poland, and the decisions of the people behind the Iron Curtain that they would rather be free and elect their own governments.