One wonders if Putin and Lavrov will ever understand that there is no possibility whatsoever of having a successful negotiation of Russia’s security concerns with Washington. There are powerful reasons for this impossibility and the reasons are powerfully obvious.
One reason is that Washington greatly prefers Russia as an enemy than as a partner. Why? Because the US military/security complex is a powerful, entrenched collection of institutions that has an annual budget of 1,000 billion dollars. Such a vast sum requires an enemy for its justification.