"Ukraine would have had some sort of nuclear capability within the week." For how long? Nukes need maintenance. To maintain them, you will need to rebuild the

"Ukraine would have had some sort of nuclear capability within the week." For how long? Nukes need maintenance. To maintain them, you will need to rebuild the entire supply chain on Ukrainian territory. Do you even have the necessary know-how? What percentage of GDP are you willing to spend on it? Until today, Ukraine has lower GDP than Czechia. In the 1990s, it was even worse. With their economy destroyed by decades of Soviet rule, they were happy to survive somehow. Tangentially, it is well possible that Russian nukes are actually under-maintained, for the very same reason: it is expensive to keep them in working order, and Russian economy is not very strong. Perhaps most of them would not explode. But we'd better not find out.