A P,

Actually, media releases after Leaders meetings or after meetings of senior officials of 2 countries have no official status either. Nor generally, do the substance of discussions held between leaders and officials of 2 or more countries for that matter.

However, the tone and direction of bi & multilateral relations are largely set by such communications between important personages and, by countries through such media releases and statements. These set the stage out of which more formal commitments can and do arise.

Keeping this in mind, we can see just how disruptive it is to have the Leader of the most powerful and influential country, time and again giving clear evidence that he is the archetypical willful loose cannon.  How can anyone know where the US is headed on key issues or, where a US commitment is made or proposed in this environment, whether it will still be honored (or even remembered) by the US tomorrow or, certainly, a year from now?