Authored by Andrew Korybko via substack,

The peace process might go kaput if they can’t resolve these issues...

Trump speculated that Russia’s bombing of civilian areas might signal that “maybe [Putin] doesn’t want to stop the war, he’s just tapping me along”, and then reiterated his earlier threat to impose “secondary sanctions” against those who violate the US’ primary ones, which was analyzed here. This followed Trump’s latest meeting with Zelensky, who might have negatively influenced over his hitherto largely positive perceptions of Putin, and comes after reports that the US has finalized its peace plan.

Five significant disagreements that have emerged throughout the course of negotiations account for Trump’s volte-face toward Putin.

If Putin and Trump can’t resolve these issues, after which Trump would then also have to get Zelensky to agree to their new deal, then the peace process will probably go kaput. 

Putin and Trump are incentivized to resolve their disputes due to how mutually beneficial the nascent Russian-US “New Détente” is while Zelensky would struggle to continue fighting if the US once again cuts off military aid as punishment for rejecting whatever those two agree to. Be that as it may, it’ll still be very difficult to break this deadlock.