They're moral, you're moral: Puppies for everyone! No one 'wins' the Cold War.
They're moral, you're not moral: You get more advanced technology and 'win' the Cold War.
They're not moral, you are: They get more advanced technology and 'win' the Cold War.
They're not moral, you're not moral: You both get more advanced technology, neither side 'wins'.
Stealing is always a better decision. It has nothing to do with 'hate' necessarily; a purely rational robot, programmed with goals of 'win the Cold War, and, if you can, get puppies for everyone' would also be immoral.
Here is an example of a better win-win premise and result:
Sweden and the United States seal a major nuclear energy agreement (6 August 2024)
https://energynews.pro/en/sweden-and-the-united-states-seal-...
> Sweden and the USA sign a memorandum of understanding to intensify collaboration in advanced nuclear technologies, including modular reactors and waste management.
> The main objectives of the agreement include the joint development of advanced nuclear reactors, such as small modular reactors (SMRs), and improved nuclear waste management.
If this can be done with Sweden, then with some extra effort from both sides, it also can be done with Russia. If you then repeat it in a hundred sectors, the equation changes completely.
I am assuming a mostly neutral apathetic mindset as a baseline. It gives a foundation on which to build positively and cooperatively upon.