What does Zelensky expect from the Normandy Summit of Four - signing a capitulation in the presence of Putin, Merkel, and Macron? It would be suicidal not only for Zelensky and Ukraine but also for Europe as this would lead to a large-scale Syria kind of war in Europe, replacing controllable Russian partial occupation of Ukraine.
Now Russia is leading a war of attrition against Ukraine. The recognition of the Russian military exclave inside Ukraine would provoke Moscow to start a war of annihilation against Ukraine while pretending to be a peace-maker.
Shoigu already promised "to stop Ukrainian extremists" and regretted that "it was not done earlier."