The smooching is over.
Trump already appears to be realigning his approach to Putin in Syria, and perhaps elsewhere.
BUT !!
The U.S. has now conducted serious infrastructure-degrading military operations in Syria under President Trump's command.
Will Putin force a confrontation? Get one of his planes shot down?
Or some other -knock this off my shoulder- provocation that could be escalated?
If that or any other reason results in escalation:
will it escalate?
If it escalates, how far?
A navy battle in the Mediterranean?
Worse?
Who will "blink"? Putin? Or Trump?
Or will it simply result in global thermonuclear annihilation of the human race?