http://www.eurasiareview.com/20062016-stalin-considered-giving-hitler-ukraine-and-baltic-republics-oped/
A few days after Hitler broke his alliance with Stalin and invaded the Soviet Union, the Soviet dictator used a diplomatic back channel to explore whether the Nazi leader would be prepared to end the war if Stalin agreed to hand over to German rule Ukraine, the Baltic republics and perhaps even more.
That is the conclusion of a Friday article by historian Nikita Petrov in “Novaya gazeta” an article that undercuts both Stalin’s carefully cultivated stance as someone who was prepared to fight the invader to the end and Vladimir Putin’s use of World War II as a legitimating and mobilizing tool in Russia today (novayagazeta.ru/comments/73493.html).
The history of these events is by its very nature murky and can be reconstructed only by a careful reading of Russian archival materials, Petrov suggests.
I'm not sure how this compares to Suvarov's interpretation in Icebreaker of Soviet military and diplomatic policy. It seems though, that the available evidence allows many interpretations of Stalin's policy and the history of diplomacy.