Trump said he wanted peace, but I think he really wanted an end for the sanctions, probably to help with his goal of lowering the price of oil. I don’t think he cares at all about how things turn out in Ukraine.
Russia is an important exporter of fertilizer, fuel and food. In contrast, most of the third world imports these things.
Sanctions imposed by the West do not (and cannot without a naval blockade of Russia, which no one in the West is crazy enough to advocate for) prevent the third world from continuing to import these Russian exports, but they introduce significant friction on these transactions.
Much of the third world does extensive business with Russia and rely on Russia for access to advances technologies. For example, Russia is helping Bangladesh build its first nuclear power plant: https://world-nuclear-news.org/Articles/Rooppur-Bangladesh-p...