Saudi stepping in to help out in Yemen

Saudi, Egypt and Iran fighting over Yemen. What could possibly go wrong?

2 possible interpretations,the Obo admin backing Iran (while sometimes pretending not to) or the Obo admin totally fookin clueless, though he has claimed Yemen as one of his 2 great successes in the mid east
Either way, if iran adds Yemen to Iraq and its Med colonies then it could cut off oil exports through that strait, add to this the Saudis under threat from both Iran and the sunni islamics, things can get even worse than the current disaster.
Not much oil coming out of Libya since Obo turned it into a rubbleised islamic state, and the Russians aren't about to help out. The US will probably be fine due to the fracking which obo has desperately tried to stop (though he has since claimed credit for it).