For Donbas, this is an internal Ukrainian problem, and we [Russia] are doing everything we can to contribute to its solution.
The US’s global goal is to build a unipolar world, and its goal towards Belarus is torpedoing integration in the post-Soviet space and of the Union State between Belarus and Russia. While nominally the US promised to deliver oil to Belarus, in reality, it is pushing Belarus to destroy its national economy. Instead of building a less dependent economy on Russia, Belarus can only become a totally dependent country on the West, without economy and statehood.
This is a conspiracy theory which is consistent with recurring Belarus-related pro-Kremlin disinformation narratives about West's aggressiveness towards Belarus and its attempts to disrupt Belarusian-Russian relations. This message is based on a false dilemma about the direction of Belarus's political and economic development (successful union with Russia vs. ruined economy and lost statehood).
See similar propagandistic false dilemmas for Belarus: union with Russia vs. no future, normal development under Russia vs. forced Polonization and economic devastation, turning into a Russian western federal area vs. descent into Nazism. See also earlier disinformation cases claiming that the EU wants Belarus to lose its independence and is trying to disrupt Belarus-Russia relations.