Yes, Root Causes ...

 ... repeated over and over again by Russia, including today in Putin and Trump call. 

Both the Russian and US leaders agreed that a temporary ceasefire as proposed by Ukraine and its European backers “would only prolong the conflict and risk a resumption of hostilities,” according to the Kremlin aide. Putin agreed to a proposal from Trump to continue the settlement process by forming two “working groups” to tackle security and economic issues, Ushakov said. Earlier on Sunday, Trump wrote in a post on Truth Social that he had a “very productive” conversation with Putin.

This is from RT. To understand what it going on I single out this: 

Putin agreed to a proposal from Trump to continue the settlement process by forming two “working groups” to tackle security and economic issues. 

In non-diplomatic language it means that the US (Trump Administration) needs to do very many things before the gate to offramp will truly open. It is a long, protracted process, though--relations between the US and Russia have been thoroughly destroyed by the US following Soviet collapse, while simultaneously degenerating into the present state of a complete political and cognitive chaos. But this is regarding the US. Europe? Here is report on that in proper wording:

The leaders of the two countries agreed to assess the proposals of Kiev and the European Union for a peaceful settlement as attempts to prolong the conflict, since proposals for a temporary ceasefire under the guise of preparing for a referendum, according to the presidents, only increase the risk of a resumption of hostilities. Both presidents agreed to call again soon after Trump's meeting with Zelensky.   

Get it? That's the maneuver. That's the core issue for the US. Detach (from Europe, which is dead anyway), come to Mother Russia with atonement by means of all kinds of diplomatic and economic moves which look like mutually beneficial and the real discussion on how the US will be "integrated" into the multipolar world will commence. The US is too important of a country, a military-political entity to be ignored. Europe is not. Fate of NATO? Only morons in NATO's Brussels HQs can believe that they can fight Russia. So, it doesn't really matter what will be the outcome of Trump and Ze "negotiations".