Marco Rubio actually said...

The purchase of 32 metric tons of Iranian heavy water by the U.S. Department of Energy's Isotope Program will fulfill a significant amount o...

Have they exceeded--have they asked to go to areas that are not necessarily part of the treaty?

So is Russia in full compliance with the treaty, given it imposes restrictions on territory that is subject to this surveillance?

We cannot preach temperance from a bar stool.