Listen carefully to what Runio is saying here. He was arguing for Netanyahu's line, ie that the US should bomb Iran and if not, adopt impossible demands (dismantlement) that ensure the collapse of diplomacy.
Since that fight appears to have been lost, Rubio is shifting to two new demands that also will ensure the collapse of talks and a rush to war.
First, he signals that the special restrictions on Iran's program should either be in perpetuity or for a very long time, rather than time-limited (which is standard for arms control agreements). Perpetuity is a non-starter, just like dismantlement. Lengthening them will be very hard, but it is not likely impossible. Again, given his support for military strikes, according to the NYT, this raises questions.
The second point is more crucial. He argues that the Europeans HAVE TO trigger snapback sanctions on Iran at the UN. This is what Bolton and Pompeo tried to do under Trump I and failed. Trigger snapback will cause Tehran to walk out of the NPT and kick out the IAEA inspectors. This would cause a major crisis and very likely the end of diplomacy. Rubio knows this very well because the Europeans have gamed this out extensively.
So on both counts, Rubio is publicly arguing for measures that will cause the collapse of diplomacy and pave the way for war. Which is consistent with the NYT account of the internal debates in the Administration.
Trump's focus is on preventing an Iranian nuclear weapon. Diplomacy is by far the superior path to that goal, but it also requires realistic goals and not the adoption of deliberate non-starters.
There are ways for Trump to get a better deal, but Rubio's recommendations will get Trump no deal - and a war.
Mike