into a german protectorate another historical document to change the fate of ukraine was the molotov ribbentrop pact of one thousand nine hundred thirty nine one of many such agreements being signed between european countries and rising germany. attempting to protect his nation from the approaching nazi threat. joseph stalin negotiated a treaty of nonaggression with adolf hitler while promising each other piece of the soviet in german foreign ministers molotov and ribbentrop realign the map of eastern europe splitting it into german and soviet spheres of influence. no sooner had the mala tav ribbentrop pact been signed then poland was split and in september of one nine hundred thirty nine eastern poland awoke to be western ukraine and a part of the family of soviet republics and the u.s.s.r. . but even this bold dividing of lands and nations only delayed the inevitable germany broke its promise to the u.s.s.r. . on june twenty second one thousand nine hundred forty one germany invaded the u.s.s.r. launching barbara rossa the largest military operation in world history. barbara was aiming for st