there is no longer any mechanism to make them so...it’s the fact that there are no means to make that happen
The vast majority of Ukraine aid was specifically mandated by Congress. This, for example, was $60B in April. I'm not sure what you are referring to when you say that there is 'no means to make that happen' when there clearly is.
If your complaint is that people voted in too many Republicans and Republicans won't do what you or I want, I would argue that Democrats should step up their game and earn more votes next election.
Looks like they are attempting to cut off the western portion of the country from government forces. This, if successful, would give the rebels control of the Mediterranean ports and a very large swath of additional territory.