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As the Middle East braces for another escalation of conflict, Tehran finds itself cornered by Donald Trump’s coercive diplomacy, facing the stark choice between strategic concession or regional confrontation.

Donald Trump’s return to the presidency has reignited US–Iranian hostilities, transforming Yemen into a strategic flashpoint. His administration’s doctrine of militarised diplomacy, cloaked in zero-sum calculations, has elevated the Houthis from a peripheral proxy to a principal trigger for escalation. By explicitly linking Houthi missile fire to Iranian command, Trump has effectively nullified Tehran’s longstanding strategy of plausible deniability. 

Historically, Iran’s use of proxies has relied on operating within a grey zone; projecting influence while avoiding direct confrontation. Trump’s return seeks to dismantle this strategic ambiguity, reclassifying all proxy activity as acts of Iranian statecraft. The US military has launched its most expansive campaign under United States Central Command (CENTCOM) against the Houthis since the Red Sea crisis began in late 2023, targeting ballistic missile infrastructure, drone depots, and senior leadership in Yemen. The operation, launched on 15 March, marked a strategic shift, following Trump’s re-designation of the Houthis as a Foreign Terrorist Organisation and his vow to “rain hell” on their positions if the attacks continued. Trump’s rhetoric has escalated accordingly, and he has warned: “Every shot fired by the Houthis will be looked upon, from this point forward, as being a shot fired from the weapons and leadership of Iran.” 

This traps Tehran in a paradox: either abandon the Houthis, risking both reputational credibility and strategic depth, or absorb the full brunt of US retaliation. Neither option is strategically tenable. Recognising the stakes, Iran has reportedly urged the Houthis, via Omani intermediaries and back channel diplomacy in Tehran, to scale down their maritime attacks, particularly in the Red Sea. However, Houthi leadership has publicly dismissed such appeals, reaffirming their commitment to targeting Israeli shipping and rejecting external interference in their operational decisions. Their resistance is fuelled by ideological conviction, conflict-tested resilience, and an expanding sense of regional purpose. 

Since the beginning of the recent Israel-Hamas conflict, and amid Hezbollah’s decline, Hamas’s isolation, and Syria’s collapse, the Houthis have emerged as Iran’s most assertive proxy. Their attacks on Red Sea shipping and missile strikes against Israel, while mostly intercepted, nonetheless embarrass Arab regimes and stretch Israeli and American defensive postures. 

The renewed Gaza conflict, triggered by Israel’s March 2025 bombing that killed five Hamas leaders and over 400 civilians, according to the Gaza Health Ministry, has collapsed the fragile ceasefire and reignited a multifront war involving Hamas, Hezbollah, and the Houthis. With Gaza’s death toll now exceeding 50,000, Hamas frames its actions as part of a broader resistance to Israeli aggression. This development has galvanised regional anger and contributed to a broader mobilisation among Iran-aligned actors. Hezbollah has resumed intermittent rocket fire along the Lebanese border, while the Houthis, citing solidarity with Gaza, have intensified missile launches towards Israeli territory, including attempted strikes near Ben Gurion Airport, underscoring their expanding operational capacity and the symbolic coordination anchoring the Axis of Resistance.  

Tehran’s influence may be weakening. The Houthis have repeatedly demonstrated a higher risk appetite, often acting beyond Iran’s preferred thresholds of escalation. This divergence complicates Tehran’s efforts to preserve plausible deniability while reaping the strategic dividends of proxy activism. The resulting imbalance reveals a deeper problem: Iran seeks the benefits of Houthi militancy without bearing the cost, an increasingly unsustainable equilibrium under Trump’s zero-tolerance posture. 

Iran’s dilemma: no more deniability 

According to the 2025 US Intelligence Community Threat Assessment, the Houthis continue to enhance their military capabilities through arms and dual-use technology imports from Russia and China. The smuggling of drone components through the Red Sea and the Omani-Yemeni border indicates a pattern of sustained logistical support. By dismantling Iran’s plausible deniability and publicly attributing every Houthi strike to Tehran, Washington seeks to force a binary: either Iran controls its proxies or accepts full strategic liability. 

This exposes Tehran to a potential regional escalation that it is likely unprepared to navigate. The US narrative, amplified by Trump’s statements and CENTCOM’s operational tempo, collapses the operational gap between proxy and patron. This leaves Iran with shrinking room for strategic manoeuvre, particularly as it seeks to avoid direct conflict while preserving deterrent credibility. The Israeli Defence Forces (IDF) have already conducted cross-border raids into Yemen, and Israel is lobbying for expanded UN sanctions on Iran’s missile program. 

Backchannel bargains: araghchi’s high-wire diplomacy 

Amid growing domestic unrest, Iranian Foreign Minister Abbas Araghchi has reportedly been granted authority to pursue indirect negotiations with Washington. While Supreme Leader Khamenei maintains opposition to direct talks, the use of European and Omani channels offers Tehran a diplomatic off-ramp, though under immense diplomatic and political pressure. Araghchi, a veteran of the original Joint Comprehensive Plan of Action (JCPOA) talks, is viewed as more pragmatic than hardliners in the regime. 

This opening follows Trump’s letter to Khamenei, demanding a new nuclear agreement within two months. The letter includes explicit demands: dismantle uranium enrichment, abandon missile development, and sever ties with regional proxies.  

Iran’s nuclear posture remains opaque. The IAEA confirms Tehran has stockpiled enough 60 percent enriched uranium for multiple warheads if refined further. Yet, Iran insists its nuclear aims are peaceful. Semi-official sources suggest that continued Western escalation could prompt withdrawal from the Non-Proliferation Treaty.  

Iran’s domestic pressures are compounding. The economy suffers under inflation, sanctions, and currency collapse. The unrest in Urmia during Nowruz—the Persian New Year celebrated on the spring equinox—driven by inter-ethnic Kurdish-Azeri tensions, underscore the regime’s waning ability to manage internal dissent. With state institutions weakened, and central authority increasingly concentrated in the hands of Khamenei, public disillusionment is deepening. 

The squeeze on Iran: less room to manoeuvre 

Iran’s ability to maintain the status quo is under unprecedented strain. Its decades-old strategy of “strategic patience” is becoming harder to sustain. Though Iran continues to nurture ties with China and Russia, and remains engaged with European interlocutors,these relationships no longer offer the same buffer. The European Union, constrained by Washington’s hard-line approach, lacks the independence to offer credible guarantees. 

Meanwhile, Israel and Saudi Arabia remain resolute in preventing a nuclear-armed Iran. The Begin Doctrine, which justified Israel’s pre-emptive strikes on Iraq (1981) and Syria (2007), may resurface should diplomacy falter. The spectre of unilateral military action now shapes Tehran’s strategic calculus. 

Regionally, Iran’s proxy entanglements are escalating. The synchronised attacks from the Houthis, Hamas, and Hezbollah are overstretching Israeli defences and fuelling calls in Tel Aviv for broader regional offensives. Israeli retaliation, paired with US military strikes, has intensified the risk of a wider conflagration. Arab regimes, especially the UAE and Saudi Arabia, fear being drawn into the fray, threatening their economic visions for 2030 and beyond. 

Meanwhile the Palestinians remain largely abandoned, with no Arab state willing to absorb the population of Gaza as Trump toys with expulsion scenarios. This hard-line vision, absent regional consensus, risks igniting further instability across Jordan, Egypt, and the broader Arab world. Trump’s coercive diplomacy may satisfy tactical aims but alienates Arab publics, a recipe for internal backlash across fragile states. 

Yet, abandoning its nuclear leverage is not politically viable for the Iranian regime. Any concessions must be matched by credible, enforceable guarantees—a lesson painfully learned from Trump’s unilateral exit from the JCPOA in 2018. Tehran may accept a phased or limited deal but will resist anything perceived as total capitulation. 

In sum, Iran now faces a multidimensional siege: external coercion, proxy volatility, domestic instability, and ideological polarisation. Trump’s second term seeks to corner Tehran into submission, not negotiation. Yet, by collapsing the space between proxy action and state responsibility, Washington may provoke precisely what it seeks to prevent: a regional war with no clear exits.

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