A military plan to secure the Strait of Hormuz by occupying Kharg Island would not be sufficient on its own; securing parts of the Iranian coastline would also be necessary.
Restoring confidence for safe maritime transit is a major hurdle; convincing insurance companies and shipping lines is described as a "very, very hard sell" regardless of military actions.
Iran's ability to disrupt shipping is persistent and low-cost, using drones, mines, or speedboats, making it difficult to guarantee security even with air/land superiority.
Continued U.S./Israeli strikes, despite tactical successes, indicate Iran's disruptive capabilities have not been fully eliminated and can be rebuilt over time.
The economic damage to Gulf states from the closed strait is described as "catastrophic" for their long-term economic visions.
Gulf state neighbors are currently resisting the instinct to retaliate offensively against Iran, but the duration of their endurance is a key uncertainty.
A proposed $200 billion U.S. supplemental budget request signals an expectation of a prolonged conflict beyond the initial "short" description, especially if it involves "boots on the ground."
The conflict currently lacks a clear off-ramp or resolution path, complicating the outlook for de-escalation.