The conflict in Yemen, marked by the rise of the Iran-backed Houthi movement, has been a persistent source of regional instability. Since late 2023, the United States has been engaged in a series of military strikes against Houthi rebels in Yemen, a campaign that has escalated sharply under the Trump administration. The Houthis, an Iran-backed Shia militia controlling much of western Yemen, including the capital Sanaa, have disrupted global trade by attacking commercial shipping in the Red Sea and Gulf of Aden with missiles and drones. These actions, initially framed as solidarity with Palestinians amid the Israel-Hamas conflict, have drawn the ire of the U.S., which seeks to secure vital maritime routes and counter Iran’s regional influence. The strikes represent one of the most significant U.S. military engagements in the Middle East in recent years, raising questions about their strategic efficacy, humanitarian toll, and long-term implications for Yemen’s decade-long civil war.
Background.
The Houthis, officially known as Ansar Allah, emerged in the 1990s as a Zaidi Shia resistance group in northern Yemen. They opposed Saudi influence and the Yemeni government’s perceived corruption and mismanagement. Over time, the Houthis gained strength, eventually seizing control of the capital, Sanaa, in 2014. Their expansion led to a Saudi-led military intervention in 2015, resulting in a protracted war that has devastated Yemen. Backed by Iran with weapons, training, and financing, the group has since consolidated control over Yemen’s northwest, including the strategic port city of Hodeida.
Their attacks on Red Sea shipping, which carries 10-15% of global trade, began in earnest in November 2023, ostensibly targeting vessels linked to Israel in response to the Gaza conflict. However, the Houthis’ targeting has often been indiscriminate, hitting ships from various nations, including those with no clear Israeli ties. By early 2025, the Houthis had conducted over 100 maritime attacks, sinking several vessels, killing crew members, and forcing shipping companies to reroute around Africa’s Cape of Good Hope, adding billions in costs. Their arsenal—ballistic missiles, cruise missiles, and explosive-laden drones—has proven surprisingly resilient despite years of Saudi-led and U.S. airstrikes. The group’s ability to strike at range, coupled with their defiance of international pressure, prompted the U.S. to act decisively, viewing the Houthis as both a regional security threat and a proxy for Iran’s ambitions.
Aggressive U.S. Response: From Restraint to Escalation
Under President Biden, U.S. strikes on the Houthis, which began in January 2024 as part of Operation Prosperity Guardian, focused on degrading their ability to launch attacks. These operations targeted missile launch sites, radar systems, and drone storage facilities, often in coordination with the United Kingdom and with tacit support from Saudi Arabia and the UAE. The goal was to limit civilian casualties while signalling resolve, but the strikes failed to deter Houthi aggression. By mid-2024, maritime attacks continued unabated, and the Houthis began targeting U.S. and allied naval assets directly.
The Trump administration, taking office in March 2025, has adopted a more aggressive posture. Drawing on lessons from prior campaigns, the U.S. shifted its focus to Houthi leadership, command-and-control nodes, and critical infrastructure, including sites in urban areas like Sanaa. The Pentagon deployed a robust array of assets: the USS Harry S. Truman carrier strike group, F-22 and F-35 jets, and B-2 stealth bombers operating from Diego Garcia. Over 30 targets were struck in mid-March alone, including Sanaa International Airport—used for both civilian and military purposes—military bases in Saada, and communication networks in Hodeida. Described as one of the largest bombing missions in Yemen in years, these strikes marked a clear escalation.
The U.S. deployment of B-2 Spirit stealth bombers to Diego Garcia, a strategic base in the Indian Ocean, appears to be part of a broader military response to ongoing Houthi attacks in Yemen and escalating tensions with Iran, which backs the Houthis. While the Pentagon hasn’t explicitly confirmed the deployment is solely in response to Houthi actions, the timing aligns with intensified U.S. airstrikes against Houthi targets. Diego Garcia’s significance lies in its distance from Houthi and Iranian missile ranges—about 2,400 miles from Iran and over 2,200 miles from Yemen—making it a secure staging point compared to bases in the Gulf. The B-2s, capable of carrying massive payloads like the 30,000-pound GBU-57/B Massive Ordnance Penetrator, were used in October 2024 to strike Houthi bunkers, signaling their role in precision strikes against fortified targets. Recent satellite imagery and open-source intelligence indicate at least six B-2s, supported by C-17 cargo planes and KC-135 tankers, are now at Diego Garcia, a notable buildup given the U.S. has only 20 B-2s in its fleet.
This move likely serves multiple purposes: deterring further Houthi attacks, signaling to Iran amid stalled nuclear talks, and preparing for potential escalation. The deployment could also be a response to Houthi resilience despite U.S. and UK strikes, which have killed dozens but haven’t stopped their attacks. However, the scale of the B-2 presence suggests aims beyond just the Houthis, who lack sophisticated air defences. Analysts point to Iran’s nuclear facilities or regional proxies as potential targets, especially after warnings from the current administration about holding Iran accountable for Houthi’s actions.
The Houthi Response: Defiance and Adaptation
Far from capitulating, the Houthis have vowed to escalate their campaign. In March 2025, they declared all U.S. and Israeli-linked ships “legitimate targets,” expanding their scope to include any vessel transiting the Red Sea. They’ve also targeted U.S. drones and warships, though with limited success. Their rhetoric, amplified by state media, frames the U.S. strikes as imperialist aggression, rallying domestic support. On X, posts from Houthi-aligned accounts boast of resilience, though they lack specifics and reflect the group’s propaganda efforts.
Operationally, the Houthis have adapted by dispersing weapons, using civilian infrastructure as cover, and accelerating Iranian resupply via smuggling routes. Their ability to absorb losses while maintaining attacks underscores the limits of airpower against a battle-hardened insurgency. Some experts suggest a ground component or special operations could more effectively disrupt Houthi leadership, but this carries immense risks and lacks political appetite in Washington.
US Objectives and Challenges
The U.S. campaign has three primary objectives: neutralise the Houthi threat to Red Sea shipping, weaken their military capabilities, and send a message to Iran about the costs of supporting proxies. The strikes have disrupted Houthi operations, destroying key weapons stockpiles and delaying some attacks. However, their broader success is uncertain. Their decentralised structure, local support, and Iranian resupply make them a difficult target for airpower alone.
Analysts argue that airstrikes, while tactically effective, are unlikely to achieve strategic victory without complementary efforts. The Houthis’ maritime attacks require relatively few resources—cheap drones and missiles launched from mobile sites—making it hard to degrade their capabilities fully. Moreover, their control over Yemen’s rugged terrain and urban centers complicates targeting without risking civilian lives. The U.S. faces a delicate balancing act: projecting strength while avoiding a quagmire in a conflict with no clear endgame.
Politically, the campaign risks domestic backlash if civilian casualties mount or if it appears to entangle the U.S. in another protracted war. Internationally, allies like Saudi Arabia and the UAE, wary of Houthi retaliation and seeking a détente with Iran, have distanced themselves from the strikes, leaving the U.S. to act essentially alone.
Geopolitical Implications
Humanitarian Implications. Yemen, already the site of the world’s worst humanitarian crisis, faces further strain from the U.S. campaign. Over 24 million Yemenis—80% of the population—require aid, with millions facing famine. Strikes on infrastructure like Sanaa’s airport and Hodeida’s port, a lifeline for food and fuel imports, threaten to exacerbate shortages. While the U.S. insists it avoids purely civilian targets, the Houthis’ integration of military assets into urban areas increases the risk of collateral damage.
Regional Escalation Risks. There is a real possibility that the conflict could spill over into neighbouring countries. The Houthis have demonstrated their capability to strike deep into Saudi and UAE territory. If the U.S. strikes continue, the Houthis might expand their attacks, targeting American military installations in the Middle East.
U.S.-Iran Tensions. The Houthis are widely regarded as an Iranian proxy. While Iran denies direct involvement in Houthi attacks, it provides significant financial, logistical, and military support. The U.S. strikes sent a clear message to Tehran that its regional influence will be countered. However, this escalation also raises the risk of a broader U.S.-Iran confrontation, particularly if Iran chooses to retaliate by increasing support for the Houthis or other regional proxies.
Impact on Red Sea Trade. The Red Sea is a crucial global shipping route, and the ongoing conflict threatens vital trade flows. The U.S. military operations aim to secure these waters, but prolonged hostilities could deter commercial shipping, increase insurance costs, and disrupt global supply chains, particularly for oil and consumer goods.
Looking Ahead: A Path to Resolution
As of April 2025, the U.S. shows no signs of relenting, with Pentagon officials promising “overwhelming lethal force” until the Houthi threat subsides. Yet the campaign’s long-term prospects remain murky. Historical parallels suggest air campaigns alone rarely defeat entrenched militias. A diplomatic track, potentially involving UN-led talks to address Houthi grievances like Gaza aid blockages, could reduce maritime attacks but would require concessions the U.S. and its allies are loath to make.
The broader Yemen conflict, pitting the Houthis against the exiled government and its Gulf backers, complicates matters. Without progress toward a ceasefire or power-sharing deal, U.S. strikes risk becoming a sideshow in a larger war. The Red Sea remains a flashpoint, with global trade and regional stability hanging in the balance. The Houthis, battered but unbowed, continue to defy the world’s sole superpower, ensuring Yemen’s tragedy endures.
Conclusion
The U.S. strikes against the Houthis mark a significant escalation in Yemen’s ongoing war and the broader struggle for influence in the Middle East. While these operations aim to protect global trade and deter aggression, they also carry the risk of unintended consequences, including regional escalation and civilian casualties. The challenge for the U.S. will be to balance military action with diplomatic efforts to prevent the conflict from spiralling out of control. Without a comprehensive strategy that addresses both the military and political dimensions of the crisis, Yemen’s war will likely persist.
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References:-
- RAND Corporation. The Future of U.S. Policy in Yemen: Challenges and Opportunities. Rand.org, 2024.
- Brookings Institution. “The Houthis’ Long War: How U.S. Strikes Might Change the Conflict.” Brookings.edu, 2024.
- Carnegie Endowment for International Peace. “Gulf Security and the Yemen War: How Regional Powers Are Shaping the Battlefield.” CarnegieEndowment.org, 2024.
- Chatham House. “Red Sea Tensions and Global Trade Security: The Houthi Factor.” ChathamHouse.org, 2024.
- The Soufan Center. “Maritime Security in the Red Sea: The Growing Threat from Non-State Actors.” SoufanGroup.com, 2024.
- United Nations Security Council Reports on Yemen. UNSC Resolutions and Reports on the Situation in Yemen. Un.org, 2024.
- The Washington Post. “U.S. Military Strikes Houthis as Red Sea Attacks Intensify.” The Washington Post, 2024.
- Al Jazeera. “Houthi Retaliation: What’s Next After U.S. and UK Strikes?” AlJazeera.com, 2024.
- The Guardian. “Red Sea Crisis: How Houthi Attacks on Shipping Disrupt Global Trade.” TheGuardian.com, 2024.
- The New York Times. “Biden’s Yemen Dilemma: Fighting the Houthis Without Escalating War.” NYTimes.com, 2024.
- International Crisis Group. Yemen’s War and Its Regional Implications. CrisisGroup.org, 2024.