Binyamin Netanyahu’s dramatic declaration to world leaders in 2012 that Iran was about a year away from making a nuclear bomb was contradicted by his own secret service, according to a top-secret Mossad document. It is part of a cache of hundreds of dossiers, files and cables from the world’s major intelligence services – one of the biggest spy leaks in recent times.
In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken," and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. - Carl Sagan