This is for conspiracy theorists and those who know the history of false flag operations. On the matter of the North Korean affair.

In what way do you think the US intelligence agencies are involved in the North Korean affair?
For example, one could posit that the CIA blew up the South Korean ship and planted false evidence to implicate NK, to spark a conflict between SK and NK and to subsequently probe how far they can successfully go, both diplomatically and military, against a third world nuclear power until said nuclear power resorts to actually using their nuclear arsenal on their adversairies and since they don’t want to use American forces for this, they dragged South Korea into it.
The purpose of this would be to have a point of reference for a possible/likely future US invasion of Iran, who they fear is in the process of developing nuclear weapons.

I would also like to point to a similar plan by the US involving Cuba during the cold war, called Operation Northwoods.