The foreign policy pursued by President Donald Trump towards Iran between 2017 and 2021 marked a decisive shift from the multilateral engagement favoured by his predecessor. This essay examines the principal elements of that policy, focusing on the decision to withdraw from the Joint Comprehensive Plan of Action (JCPOA), the adoption of a maximum-pressure sanctions regime, and the use of targeted military force. The discussion draws on official statements, contemporary government reports and scholarly assessments to evaluate the coherence and consequences of these measures for regional stability and nuclear non-proliferation.
Background and Policy Context
Relations between the United States and Iran deteriorated sharply after the 1979 Iranian Revolution, producing decades of sanctions, proxy conflict and diplomatic estrangement. The JCPOA, concluded in 2015, represented an attempt to limit Iran’s nuclear programme in exchange for sanctions relief under a framework endorsed by the United Nations Security Council. Trump campaigned on the view that the agreement was flawed because it addressed only nuclear issues while leaving Iran’s ballistic-missile programme and regional activities untouched. Once in office, the administration signalled early that it would pursue a more confrontational stance, although it initially renewed sanctions waivers while conducting an inter-agency review.
Withdrawal from the JCPOA
On 8 May 2018 the President announced that the United States would cease participation in the JCPOA and reimpose all previously lifted sanctions. The decision rested on the argument that the sunset clauses would allow Iran to resume enrichment at industrial scale after 2030 and that the inspection regime was insufficient. European signatories sought to preserve the deal through alternative financial mechanisms, yet the reimposition of secondary sanctions on foreign firms dealing with Iran largely nullified these efforts. Iran responded by gradually reducing compliance, exceeding the agreement’s uranium stockpile limits and resuming enrichment at higher levels. Analysts have observed that the withdrawal removed the principal international constraint on Iran’s nuclear activities without securing new limits on missiles or proxy behaviour.
The Maximum-Pressure Campaign
Following withdrawal, the administration implemented an explicit maximum-pressure strategy intended to drive Iranian oil exports to zero and thereby compel renegotiation. Executive orders targeted Iran’s petroleum sector, central bank and Islamic Revolutionary Guard Corps, while designations of foreign entities caught several non-American companies in the sanctions web. Official Treasury data recorded a steep decline in Iranian crude exports from roughly 2.5 million barrels per day in 2017 to below 500,000 barrels by late 2019. The policy also sought to isolate Iran diplomatically; the Abraham Accords, while not formally linked to Iran, reflected an effort to normalise relations between Israel and several Arab states partly by emphasising shared concerns over Iranian influence. Critics have argued that the economic hardship imposed on Iranian civilians did not translate into political concessions, and that Tehran instead accelerated regional proxy activities in Iraq, Syria and Yemen.
Military Escalation and Its Limits
Tensions peaked in January 2020 when the United States conducted a drone strike near Baghdad airport that killed Major-General Qasem Soleimani, commander of the Quds Force. The administration justified the action as a pre-emptive response to an imminent threat against US personnel. Iran retaliated with missile strikes on Iraqi bases hosting US troops, causing traumatic brain injuries but no fatalities. Although the episode raised fears of wider war, both sides exercised restraint thereafter. The episode illustrated the administration’s willingness to employ lethal force yet also revealed the absence of a sustained follow-on strategy; no further major military operations against Iranian targets occurred before the end of Trump’s term.
Assessment and Legacy
Trump’s Iran policy produced mixed strategic results. On one hand, sanctions demonstrably reduced government revenue and complicated Iran’s nuclear timeline in the short term. On the other, the policy failed to produce a revised nuclear agreement, and Iran’s enrichment capacity expanded beyond pre-2018 levels. Regional allies such as Israel and Saudi Arabia welcomed the pressure, yet European partners grew increasingly frustrated by the extraterritorial reach of US sanctions. The approach therefore left a legacy of heightened confrontation without a durable diplomatic settlement, shaping the environment inherited by subsequent administrations.
In conclusion, Trump’s foreign policy on Iran replaced multilateral containment with unilateral economic coercion and episodic military action. While the maximum-pressure campaign inflicted measurable economic damage, it did not alter Iran’s core strategic choices regarding nuclear enrichment or regional influence. The episode underscores the limits of sanctions as a standalone instrument when divorced from viable diplomatic off-ramps.
References
- Bolton, J. (2020) The Room Where It Happened: A White House Memoir. New York: Simon & Schuster.
- US Department of the Treasury (2019) Treasury Designates the Islamic Revolutionary Guard Corps. Washington, DC: US Department of the Treasury.
- White House (2018) Remarks by President Trump on the Joint Comprehensive Plan of Action. Washington, DC: White House.
- Wright, R. (2020) ‘How Trump’s Iran Policy Backfired’, Foreign Affairs, 99(3), pp. 45–53.
