IMHO, a “filibuster” will NOT block — if Senator McConnell:
1. Declares that saving America from Iranian nuclear bombs is MORE IMPORTANT than “saving” a Senate procedural “rule”, thereby “nuking” that filibuster rule, at least with respect to international treaties.
RESULT: The “deal” is disapproved — as the majority of Americans want. Senator McConnell is a hero. And the WH can NOT claim that Congress supported it.
or 2. Declares that the “Iran Deal” is a TREATY in spite of its deliberately misleading “label” and then conducts a role-call vote on that TREATY.
Results: That TREATY fails. Senator McConnell is a hero to a majority of Americans.
If the WH threatens to “sue” the Senate by claiming that this TREATY is not a “treaty” because of its oh-so-cute label”, let them.
While that litigation proceeds, Iran does not get the money, which is what they really want....
All it takes is for Senator McConnell to use the power he has.