When President Obama talked of the Israel-Palestine problem, he stressed "the bond between Israel and the United States is unbreakable." That statement explains his later wording:
“It’s about preventing a nuclear arms race in the Middle East that could lead this region and the world down a hugely dangerous path. I understand those who protest that some countries have weapons that others do not. No single nation should pick and choose which nation holds nuclear weapons.”
Translation: Because of that unbreakable bond, I won't speak honestly of Israel's nuclear capabilities and how that might contribute to any desire for equalization in the Middle East.
What nations chose America as the developer of nuclear weapons? Which countries selected Israel or Pakistan as rightful holders of weapons of mass destruction? What methods of war is America developing with its secret, black-operations military budget? What nations provide oversight on those WMD's? None.
Unbreakable bond? President Obama said it and he meant it.