"Short of nuclear fusion,"
Does the US have nuclear fusion?
NOBODY has nuclear fusion.
The brains that be claim clean unlimited power (thats the essential promise of fusion tech - the process that powers the sun is recreated and controlled here on Earth...if ya ask me, this is what I call playing God) is somewhere between 20-50 yrs away.
The Joint European Torus (JET) is a $50 billion geneva based fusion research project thats so far gone nowhere. The US and Japan have been long planning to setup and pursue their own fusion solution. The Chinese and the Russians have been flirting with setting up a joint project as well. Methinks India fits in well with the US here.