Venezuela's people aren't starving. Russia and China are flying in hundreds of tons of food for the people but Venezuela's Maduro has chosen to not accept US aid. This means that the US is not welcome and it's starting to resemble Syria and Assad's choice.
Will the US attack Venezuela regardless in order to gain control over Venezuela's oil resources?
If so, Russia and China will have something to say about that! It may very well be that there are no more opportunities for US aggression in which Russia and China have stakes in the fate of the victim country.