They claimed that with basically every little sprinkle of new aid for like two years, until everyone realized it was a bluff.
Putin is many things, but actively suicidal looks like a no.
https://www.youtube.com/watch?v=QgkUVIj3KWY
Everything else is just an order for preemptive suicide.
https://www.csis.org/analysis/how-ukraines-spider-web-operat...
There is no "red line".
The rest of the Arab world is mostly placated by alliances w/ the US and thus Israel, but if Israel drops an nuke all bets are off.
The Saudis will probably have a bomb before too long following a nuclear deal: https://www.reuters.com/world/us/us-removing-guardrails-prop...