The President does not just sit down with a foreign leader without previous groundwork. No preconditions does not mean no preparation. Diplomats can be dispatched in advance to gage the level of interest and the intentions of the other party. Intelligence can be gathered to take the pulse of the regime and understand what is going on in the country, whether the moment is auspicious for change and diplomacy or whether the rogue leader is just looking for a popularity boost. The President should always have a very good idea of what to expect when he or she meets with a foreign leader. They don’t just find out once they get there.