The Normandy format does not decide anything. Only direct talks between Russia and the US can change the situation. The US, who sponsors Ukraine’s leaders, needs a long-standing conflict. Ukrainian President Volodymyr Zelensky is successfully implementing this instruction. Fewer and fewer chances are left for a quick, one-or-two-year-long settlement of the conflict. The Americans are unlikely to agree to any compromises. The Donbas conflict will last a long time, and what is important in this situation is to avoid new bombings and casualties.
Summary
In the last three years, our so-called Western partners twice alleged that Russia used chemical weapons against individual targets - Sergei Skripal and Alexei Navalny.
There is obviously no evidence to support these provocations. On the contrary, there is evidence that these were deliberate, planned provocations. These tactics can be deployed in any context, and the West has been perfecting them in recent years.
Disproof
Recurring pro-Kremlin disinformation narrative denying Moscow's involvement in the poisoning of Sergei Skripal and Alexei Navalny.
Moscow's involvement in the Skripal poisoning has been proven via a thorough investigation.
The British Police have presented a solid chain of evidence on the Skripal case, with pictures, connecting the suspects to the locations in the case. Parts of the material have been released to the public. The evidence was sufficient to charge two Russian nationals, Anatoliy Chepiga and Aleksandr Mishkin with the attack on the Skripals, both Russian military intelligence operatives from the GRU, who travelled to the UK using fake names and documents. See here and here for further debunking.
Likewise, there is unequivocal evidence that Alexei Navalny was poisoned with a chemical nerve agent of the Novichok group.