Brett McGurk is a NCS world affairs analyst who served in senior nationwide safety positions beneath Presidents George W. Bush, Barack Obama, Donald Trump and Joe Biden.
The first two weeks of the Iran crisis have demonstrated army dominance by the US and Israel, with asymmetrical responses from Iran. How this performs out over the approaching weeks will decide the result. Let me clarify.
In a army battle, there are three varieties of escalations:
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Vertical escalation is direct, army targets in opposition to army targets. Here, the US and Israel retain escalation dominance. Iran is continuous makes an attempt to strike US army services and Israel immediately, however with diminishing impact.
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Horizontal escalation makes an attempt to widen the battle — Iran’s attacks against Gulf neighbors, Jordan, Turkey, and Azerbaijan. Tehran goals for these international locations to stress Washington to cease the warfare earlier than the army marketing campaign has concluded. Thus far, its efforts are failing. The international locations which have come beneath assault have banded collectively in defiance of Iran.
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Asymmetrical escalation seeks to change the foundations of the sport — suppose, terrorism, cyber-attacks, or financial sabotage. This is the place Iran holds leverage. It’s taken benefit of geography to shut down the world’s vitality artery within the Strait of Hormuz. The longer the strait stays closed, the higher the stress rises on Washington. Iran hopes and believes that President Donald Trump will name the marketing campaign quick earlier than it culminates.
The greatest counter to asymmetrical escalation is a coalition of like-minded international locations banding collectively, however that is simpler to say than do in observe, as Trump is currently discovering.
I’ve helped build coalitions giant and small to deal with safety challenges. Between 2014 and 2018, I served as an envoy for Presidents Obama and Trump and helped assemble a coalition that grew to practically 80 international locations to fight the terrorist group ISIS. Members of this coalition labored collectively not simply militarily but additionally globally by means of worldwide sanctions and new rules to deter terrorists from crossing borders or touring on airplanes. That coalition was successful and nonetheless exists immediately.
In 2023 and 2024, I helped build a naval coalition to shield a slender passageway within the Red Sea referred to as the Bab el Mandeb (“Gate of Tears”). This passage had been shut after the Houthis — an Iranian proxy — fired missiles and drones at army and cargo ships. This coalition finally grew to practically 20 international locations. It was led by the US army, however others, together with the UK and Denmark, shot down missiles and drones and supported US army operations.
That Red Sea coalition may now function a mannequin for the Strait of Hormuz. It may additionally be recalled ought to the Houthis at Iran’s urging renew their marketing campaign of terrorism within the Red Sea.
Here’s what it will take:
A army coalition is in reality a collection of authorized and political choices taken in particular person international locations. Most, together with longstanding US allies, have their very own legal guidelines and requirements that should be overcome earlier than deploying army forces overseas, notably if use of drive is likely to be concerned. For the US, that requires endurance and dealing with particular person governments to assist marshal the diplomatic and authorized predicates required to safe participation.
This usually begins with the United Nations. For ISIS, the federal government of Iraq invoked Article 51 of the UN Charter requesting collective self-defense in opposition to the terrorist group. That was sufficient for many NATO allies beneath worldwide legislation to come to its help. For the Houthis, the UN Security Council adopted a decision in early 2024 condemning the assaults within the Red Sea and affirming the worldwide proper to freedom of navigation in worldwide waters. Similarly, that met the brink for a lot of international locations to take part militarily.
In this present disaster, the Trump administration has carried out stable work on this regard. Last week, a report setting 135 international locations co-sponsored a UN Security Council decision that condemned Iran’s assaults into the Gulf and referred to as on these assaults to cease. Like the ISIS decision 10 years in the past, this decision additionally invoked the precise of collective self-defense beneath Article 51 of the UN constitution. That alone ought to meet the authorized threshold for international locations to take part in a army mission targeted on the Strait of Hormuz.
Where this will get trickier is home politics in particular person capitals. Even with authorized thresholds crossed, elected leaders face political constraints and require a base stage of home assist earlier than deploying their army forces overseas.
This is the place the Trump administration might fall quick.
Two of the essential international locations with superior naval capabilities and confirmed monitor data in opposition to ship-seeking missiles and drones embody the UK and Denmark. It was solely final week that Trump in a social media submit turned down the UK’s supply of help as coming too late. It was solely final month that Washington was in a feud with Denmark over the island of Greenland. None of that helps when now asking the leaders to place personnel in hurt’s method, and for a warfare that they had no say in launching.
No doubt, the Strait of Hormuz is a global problem that should be addressed internationally. Iran’s techniques are predictable but additionally outrageous and a menace to the whole world economic system. It’s the type of mission that international locations ought to goal to take part their very own pursuits.
Unfortunately, the US launched this warfare with restricted session with allies and has now are available with requests for assist two weeks into the marketing campaign. This will be overcome — and there’s diplomacy ongoing behind the scenes — but it surely’s higher to have had a head begin.
Presuming the authorized and political predicates are met, then the actually onerous work begins to set up army necessities, assignments, and guidelines of engagement. This is detailed and time-consuming work. It also can divide coalitions from the beginning.
In the Red Sea coalition, for instance, the French bristled at command relationships and selected to kind its personal coalition in parallel reasonably than work immediately beneath US (or UK) command. A Strait of Hormuz coalition would certainly be beneath US command given the continuing army operations. Some international locations may balk at this requirement. Rules of engagement are additionally troublesome to negotiate between militaries. Would a UK destroyer, for instance, have permitted engagement guidelines to goal missile launchers inside Iran or solely to defend in opposition to missiles within the air?
Trump’s request for China to someway take part provides one other drawback, as there isn’t a probability of the US army or different partnered militaries collaborating in a army coalition with China, neither is there any probability China would place its ships beneath US command. True, a lot of the oil from the Gulf travels to China — however securing the worldwide commons is a historic US accountability and we must always goal to maintain it that method.
If this all sounds complicated, that’s an understatement. Building a coalition is time-consuming, useful resource intensive, and painstaking work. But even the movement of placing collectively a army coalition can have an effect on the course of warfare. Iran would see that its asymmetrical techniques will backfire as they’ll quickly be dealing with not simply the US army within the strait however a assortment of militaries from all over the world. The prospect for an internationalized effort may additionally assist stabilize world markets.
In the meantime, the US army is setting circumstances for such a coalition to succeed by destroying what’s left of Iran’s missile, drone, and naval capabilities.
So, whereas we must always not count on to see a naval coalition within the water anytime quickly, we must always hope to see the artwork and observe of coalition-building take form over the approaching week. Without it, Iran might retain its asymmetrical benefit even whereas dropping the vertical and horizontal contest.