The game they are playing is basically a game of chicken. If everybody pumps all the oil they can regardless of the price, then at some point one of two things will happen: shale oil production will collapse, or other producers will run out of money, and their production will collapse. The question is, Which one of these will happen first? The US is betting that the low oil prices will destroy the governments of the three major oil producers that are not under their political and/or military control. These are Venezuela, Iran and, of course, Russia. These are long shots, but, having no other cards to play, the US is desperate. Is Venezuela enough of a prize? Previous attempts at regime change in Venezuela failed; why would this one succeed? Iran has learned to survive in spite of western sanctions, and maintains trade links with China, Russia and quite a few other countries to work around them. In the case of Russia, it is as yet unclear what fruit, if any, western policies against it will bear. For example, if Greece decides to opt out of the European Union in order to get around Russia's retaliatory sanctions against the EU, then it will become entirely unclear who has actually sanctioned whom.