One thing I have not seen being commented on is the optics (and protocol screw up) of having Trump, the head of state and government, meeting with the mere foreign secretary of Russia.  Russia's foreign secretary should not have been met by anyone senior to the American Secretary of state. That normally is presumed to be ok if the foreign secretary of a large power meets the head of government of a smaller power. You may rest assured that the Russians will be aware of the optics of this and be quite sure who won this protocol pissing contest. They have the measure of the man child in the Whitehouse.