Yes, the other poster made a confusion.
The Ribbentrop-Molotov pact gave to the Soviet Union the 4 Baltic states, i.e. Finland, Estonia, Latvia and Lithuania (this is how they were known before WWII, so this was how they were described in the official pact, and this makes more sense than the use of the term "Baltic states" today, because all 4 states occupy the Eastern side of the Baltic Sea, and all 4 of them form a linguistic enclave between the Germanic and the Slavic speaking countries, where the 2 Northern states speak Uralic languages and the 2 Southern states speak Baltic languages), and also a part of Romania.
It was the fifth on this list, i.e. Romania, which was invaded by the Russians a week after the fall of France, when Romania remained without any allies, as all of them had already been occupied either by Germany or by the Soviet Union.
The Soviet Union had already invaded much earlier the 4 Baltic states, but from Finland they had succeeded to take only a relatively small part, the rest of it remaining free.
The Russians have never "rushed to capture" any of these states "before the Nazis", because the Nazis had already given these states to them before the war.
The Russians have only rushed to occupy a part of Poland as big as possible, because the split of Poland had not been decided in advance.
Also because Russians hate Poles.
Actually if you ask Russians, they'll tell you they dont hate Poles, its the Poles that hate Russians. But then again, Russians thinks everybody hates them. It's engineered hysteria.
It's comical that you write such things and don't see the irony.