Ok just some analysis on the big POTUS tweet everyone has been talking about today. This is PURELY Opinion and speculation.

Russia vows to Shoot down any and all missiles fired at Syria = Russia will Shoot down Israeli Missiles if they try to fire again?

Get Ready Russia, Because they will be coming, nice and new and "Smart" = 2 Possibilities: POTUS is telling Russia that the USA will be hitting Not Russia, but Deep State Targets

Or He is warning Russia that missiles will be incoming from the Deep State (Maybe Israel again?)

You Shouldn't be partners with a Gas Killing Animal who kills his people and enjoys it = Message to Songbird that he shouldn't partner up with Syrian White Helmets who have been using chem attacks on their own people.