
In April, the US halted military action against Iran and shifted to a strategic focus. The beginning of this focus was through direct communication with Iran, in the form of discussing levels of high-level negotiations between the two countries through Islamabad. This action was not an indicator of US weakness, but rather part of the continuation of military success with Iran while also saving resources for the US without continuing military operations in Iran.
The US initiated the ceasefire, and Pakistan became mediator. Even though the US has been tactically successful in defeating the Iranian military, the decision to cease military operations and begin negotiating came based on the potential impact of continued military operations.
One of the reasons for the US decision to cease military operations was because of the destruction of Iranian military assets and capabilities as a result of US military operations. The US, with support from Operation Epic Fury, was able to attack and destroy a number of Iranian military targets which included command and control facilities, missile production facilities, surface maritime assets, and various other Iranian military facilities. The impact of all of these operations conducted by the US against Iran has severely compromised the ability of the Iranian military to project their military capabilities throughout the region.
Due to the tactical success the U.S. experienced, Washington was in a position to confirm core objectives essentially achieved. Significantly though, the campaign succeeded by avoiding a ground war, consistent with the U.S. government’s historical opposition to prolonged military conflicts in foreign countries. This allowed the U.S. to cease military activities prior to becoming engaged in a costly war of attrition—one that loses its value while increasing its risk.
The economic shock forced a strategic rethink
While military success led to de-escalation, economic disruption made it essential. The Iranians’ reaction to the conflict, which included limiting transit through the Straits of Hormuz, resulted in a sharp global energy crisis. Because nearly 20% of global oil flows through these narrow shipping corridors, any disruption would reverberate throughout the global marketplace.
The price of oil surged and the amount of commercial shipping through the Gulf decreased dramatically. Simultaneously, the cost of insuring goods shipped through this corridor skyrocketed and energy-dependent economies were under immediate stress. The rising cost of fuel had an immediate and visible impact on the U.S. domestic political environment, as increasing inflation numbers and an increasingly visible element of public dissatisfaction created political pressure.
The economic cost inequity created a structural constraint on how long the hostilities could be sustained. Despite possessing military superiority, the economic and political ramifications of extended wars made de-escalation an option more consistent with rational expectations.
Domestic politics and global pressures
The decision to suspend hostilities was quite closely aligned with the political realities of domestic U.S. politics. Support for additional military operations from the public was limited at best, especially in relation to the possibility of the introduction of ground troops. The skyrocketing price of oil coupled with growing economic uncertainty was a significant factor in decreasing public support, placing increased pressure on the administration to avoid escalating the situation.
At the same time, the conflict put additional stress on U.S. military forces already stretched thin providing security for three different global theatres. Given the ongoing strategic competition with both Russia and China, continuing to commit to the restoration of stability in the Middle East would reduce Washington’s military position in the rest of the world and would eliminate resources necessary to respond to the strategic competition with both of these global competitors. The need to preserve military capacity for larger geopolitical challenges was a significant factor in the determination to pursue a ceasefire.
International dynamics complicated the situation even more. Several of Washington’s key partners, particularly in Europe, were fairly uninterested in increasing their involvement in the conflict. Instead, they were focused primarily on securing their own trade routes and stabilizing their energy markets. Therefore, the lack of a unified coalition reduced the likelihood of further escalation.
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The limits of military power against asymmetric strategy
Iran’s overall strategy was largely unchanged as a result of the US strikes, and as a result of their use of asymmetrical strategy with a wide range of different proxy forces, conventional military action was not able to deliver a decisive outcome against Iran despite the magnitude of the military losses inflicted. Iran continues to retain the ability to inflict costs on others through indirect means, such as disruption of shipping and creating instability in the region, even after suffering large losses.
The above situation creates a fundamental challenge because military attacks will degrade capabilities; however, they do not necessarily eliminate the other side’s ability to exert strategic leverage. In particular, because of the risk of ongoing low intensity conflict — which consumes resources but does not yield certain results — the rationale for pursuing diplomacy has been reinforced.
What the ceasefire really means
The purpose of the Islamabad talks was to attempt to turn battlefield gains into diplomatic leverage; however, the future of the process is uncertain at best. There remain significant areas of disagreement between the two sides on various issues (i.e., sanctions, nuclear activity, control of maritime routes). The ceasefire is also very fragile, with both sides ready to recommence hostilities if the diplomatic negotiations fail.
The US decision to not escalate conflict illustrates a fundamental shift in how modern warfare operates; it is not enough to have military might and expectation that it will produce results. In fact, in today’s world, characterised by both international economic interdependence and multi-front competition, having too much military force may be counterproductive to achieving desired results. Therefore, exercising restraint could be seen as less of a concession than a method for balancing the three elements of—power, costs associated with war and their long-term effect.