If you want to have good relations with the Iranian people in the future, you should acknowledge the right and the might of the Iranian people, and you should bow and surrender to the might of the Iranian people. If you do not accept this, the Iranian people will force you to bow and surrender.
A typical psychopath is defined, according to Robert Hare an expert in the field of criminal psychopathy, as an "intraspecies predator who uses charm, manipulation, intimidation, and violence to control others and to satisfy their own selfish needs."
The following personality traits lie at the core of the psychopath's narcissistic/histrionic personality and are correlated with what is known as aggressive narcissism, or narcissism that is highly extroverted and charismatic.
Grandiose sense of self-worth
Lack of remorse or guilt
Callous/lack of empathy
Failure to accept responsibility for own actions
The presence of these traits may be predictive of the liklihood of violent behavior.
In Ahmadinejad's case the socially deviant or criminal aspects of his psychopathy are directed, for the most part, toward anyone over whom he is unable to exert complete control.
It will be interesting to see what this narcissistic and psychopathic individual has to say to the world tomorrow. Most likely the threat is merely another one of the mind games he likes to play in order to establish his superior intellect.
I have seen the same kind of clever and smug manipulative behavior in most of the murderers that I have evaluated psychiatrically over the years.