Syria Says Russia will destroy launch Assets, and so far Russia has not disavowed their support for this, that's the P-800 Yakhont and Russian sub & supersonic cruise missiles and Russian Aircraft (all Thermonuclear capable), to strike "coalition" bases, ships, submarines and aircraft.
Russia said this on at least five different occasions. This probably means the 6th fleet and some US terrorist-training camps in Syria, like At Tanf. May mean US base in Romania too.
The US, UK and France has said they will strike Syrian Military bases.
UK is out; May needs a proof and also the Parliament approval. France is in as of yesterday, Macron promised to allocate on fregate, the rest are busy doing other important work. As of today, he reduced this number, by one. The Israelis are silent.
On the positive side, KSA promised support, so Trump does not stand alone.
I was also unaware that the UK was "out", I assume this to mean that the UK Military will not fly aircraft or launch missiles attacking Syrian held territory, bases or Military.
Apparently the Limeys have shut up, and we have to wait to see what the Frogs do.