I'd try to trigger a nuclear war, have the superpowers both destroy each other and use of most of their nuclear weapons.
I mean one huge problem is going to be nuclear submarines, those are going to be hard even for an advanced alien fleet to track down and who knows the capability of their ballistic missiles. Getting them to launch their weapons would be a good way.
First port of call is setting up a base on the Moon and amassing materiel and warriors (aliens?) for an invasion. It will be VERY difficult, especially once the puny humans figure out what is going on they will begin mass producing nuclear bombs and who knows for once they might start working together rather than against each other.
Still, I think the aim is to take the planet mostly intact, so even though it would be easy to pelt them with vast quantities of hugely powerful nuclear weapons it would just create a dead radioactive planet. Might as well just invade Mars then (unless if all they want are our vast quantities of liquid water).
I could try to deliver an ultimatum and play their respective sides off each other, say whoever will lay down their arms will be spared, but the other destroyed and enslaved. Probably won't work, but it will at least sow dissent.
I mean one huge problem is going to be nuclear submarines, those are going to be hard even for an advanced alien fleet to track down and who knows the capability of their ballistic missiles. Getting them to launch their weapons would be a good way.
First port of call is setting up a base on the Moon and amassing materiel and warriors (aliens?) for an invasion. It will be VERY difficult, especially once the puny humans figure out what is going on they will begin mass producing nuclear bombs and who knows for once they might start working together rather than against each other.
Still, I think the aim is to take the planet mostly intact, so even though it would be easy to pelt them with vast quantities of hugely powerful nuclear weapons it would just create a dead radioactive planet. Might as well just invade Mars then (unless if all they want are our vast quantities of liquid water).
I could try to deliver an ultimatum and play their respective sides off each other, say whoever will lay down their arms will be spared, but the other destroyed and enslaved. Probably won't work, but it will at least sow dissent.