Trump Expelling Russians – Poison Attack Or False Flag?

Before any investigation into the alleged nerve agent attack in the UK has been completed, the Trump Administration announced this morning that some 60 Russian diplomats would be expelled from the US in retaliation for what it claimed was Russian government responsibility. Did the Russians use nerve agents in the UK? Should we at least ask for proof? Is this escalation a smoke-screen for economic events such as the Petro-Yuan?