Before the Iraq invasion there had been a lot of speculation. Finally the U.S. govt pulled out its "most secret information". Iraq had extensive wmd capabilities. Later the world finds out the real secret was that the most secret secrets were politically motivated lies. One person can justify making everything secret and creating a cult of supposedly enlightened people who "know everything" in their tiny realm, another person can argue that facts and truth are best not trusted to the care of politicians.
2 Turkish security personnel killed, 24 wounded by Kurdish suicide bomb in eastern Turkey (Reuters)
from the article: Here's how to decide whether to support an attack on Iran