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# International Relations & Impacts on Cambodia (IR&IC)
- URL: https://cambodiaobservatory.com/international-relations-impacts-on-cambodia-ir-ic/
- Published: 2026-08-22T03:33:44.000Z
- Updated: 2026-08-27T18:48:07.000Z
- Author: Sopheak OK SEREI

**Companion to Issue No. 1 — August 2026**

*Section 5 of the monthly CaMSOb brief tells you what happened. IR&IC tells you what it means for Cambodia. This bi-monthly companion goes beyond the facts of each major partner relationship to analyze concrete impacts and implications for Cambodia's economy, security, and governance — sector by sector, where relevant. It is designed to be read alongside — not instead of — the core monthly brief.*

### European Union

• The 13th EU-Cambodia Joint Committee met in Phnom Penh (26 March 2026), reaffirming alignment between Cambodia's Pentagonal Strategy and the EU's Global Gateway, and holding a "candid" but still-diverging dialogue on human rights, media freedom, and labor rights.

• PM Hun Manet visited EU institutions in Brussels (24–25 February 2026), meeting European Council President António Costa and High Representative Kaja Kallas; discussions covered Cambodia's 2029 LDC graduation, human rights, and online-scam cooperation.

• Bilateral trade reached €7.2 billion in 2025; the EU and Germany continue supporting Cambodia's customs modernization through the new Techo International Airport.

• Context: Cambodia is actively courting European partners to diversify away from overreliance on China and the US, but analysts caution that warmer engagement should not be read as European acceptance of Cambodia's human rights record — the two tracks are being pursued in parallel, not traded off against each other.

### United States

• The US-Cambodia Reciprocal Trade Agreement (signed October 2025) caps US tariffs on Cambodian goods at 19% — down from a threatened 49% — in exchange for zero Cambodian tariffs on US goods and commitments on forced-labor import bans and export-control alignment on third countries (widely read as targeting Chinese transshipment).

• Bilateral trade reached $5.96 billion in H1 2026 (+33% year-on-year), with the US now Cambodia's largest single export market.

• Security ties are warming: the USS Cincinnati made the first US warship visit to the China-upgraded Ream Naval Base in January 2026, both sides agreed to resume the Angkor Sentinel joint military exercise after a nine-year pause, and the US removed Cambodia from its arms-sale blacklist in February 2026.

• Cambodia credits US mediation for the Thailand border ceasefire and nominated President Trump for the Nobel Peace Prize — a notable diplomatic gesture reflecting how central US mediation has become to Cambodia's border strategy.

• FBI Director Kash Patel visited Phnom Penh on July 22, meeting PM Hun Manet and Police Commissioner Sar Theth specifically on combating online scam operations, which a UN Office of Drugs and Crime report estimated cost Asia-Pacific victims $114 billion in 2025\. Cambodia deported over 45,000 foreigners in H1 2026, including 16,000+ scam suspects, and will host an international anti-scam conference in September. A detail worth close attention: the US Embassy statement specifically called for improved information sharing “regarding complicit officials and scam compound owners” — explicit language about official complicity, not only scam bosses themselves.

• Context: this marks a significant normalization after nearly a decade of strained ties over democratic backsliding concerns. Analysts note Cambodia is testing how far it can warm to Washington without unsettling Beijing, evidenced by keeping Chinese naval access to Ream intact even while welcoming the US visit.

### Japan

• Under the 2023 Comprehensive Strategic Partnership, the CDC and Japan's Ministry of Economy, Trade and Industry signed a bilateral investment cooperation memorandum (29 May 2026); bilateral trade reached over $1.2 billion in the first five months of 2026 (+17% year-on-year).

• Japan reaffirmed support for Cambodia's use of UNCLOS on border-related matters and continues cooperating on combating online scam operations, which Japan treats as a regional problem rather than a Cambodia-specific one.

• Some reputational friction emerged in 2026 Japanese media coverage of tax allegations involving a Cambodian honorary consul in Sendai and of US/UK sanctions on Prince Holding Group, prompting Japanese public debate about the organizations and networks linking the two countries.

• Context: Japan-Cambodia ties are often described as one of the success stories of Asian development cooperation, built over three decades since the peace process; the 2026 friction reflects growing scrutiny of how that trust has occasionally been exploited by individuals or networks, rather than any fundamental strain in the relationship.

### Australia

• Australia Day 2026 events reaffirmed roughly AUD 2 billion in cumulative development assistance since the 1990s; bilateral trade totaled approximately $600 million in 2025.

• Priority sectors for Australian investment include agriculture/agro-industry, renewable energy, education/vocational training, and healthcare; Australia remains the largest foreign investor in Cambodia's formal mining sector via Renaissance Minerals' Okvau Gold Project.

• Australia continues raising human rights in bilateral dialogue alongside trade and education cooperation, ahead of the 75th anniversary of diplomatic relations in 2027.

• Australia's Minister for International Development, Anne Aly, visited Cambodia on August 3, 2026, continuing the pattern of regular high-level engagement.

• Context: Australia frames its Cambodia relationship within its broader 'Invested: Southeast Asia Economic Strategy to 2040' — a long-horizon, low-drama partnership focused on development and technical cooperation rather than strategic competition.

### China

• China remains Cambodia's largest trading partner and dominant FDI source (accounting for the majority of approved investment in several 2025-2026 readings), continuing to fund major Belt and Road-linked infrastructure.

• Ream Naval Base remains the most closely watched flashpoint: two Chinese corvettes rotate at the Chinese-upgraded base (upgrades funded by Beijing since 2022), but Cambodia has opened the port to other navies (the US, Japan, Vietnam) to counter perceptions of exclusive Chinese access — the January 2026 USS Cincinnati visit was the most prominent instance of this hedging strategy.

• China's active mediating role in the Cambodia-Thailand border dispute since mid-2025 has reinforced analyst expectations that Phnom Penh will align with Beijing on broader regional matters, including the South China Sea.

• Cambodia and China marked the 68th anniversary of diplomatic relations on July 19, with heavy “ironclad friendship” language on both sides. Underneath the ceremony, a quieter signal is worth noting: Cambodian foreign policy analysts have observed China's subtle unease about Hun Manet's different educational and leadership background compared to his predecessors, with Beijing's emphasis on the “unchanging” nature of ties functioning as a gentle reminder to Phnom Penh not to drift — a dynamic rarely stated outright but visible in the diplomatic language itself.

• Context: independent analysts (Lowy Institute, CSIS Asia Maritime Transparency Initiative) assess that Ream is unlikely to become an exclusive Chinese military base like Djibouti, but that China likely enjoys preferential access through its infrastructure investment — a middle-ground reading more nuanced than either "secret Chinese base" or "fully sovereign Cambodian port" framings sometimes seen in media coverage.

### India

• Defense cooperation deepened via the second CINBAX bilateral army exercise (May 2026, Kampong Speu province) and an Indian offer of demining equipment and surveillance drones, ahead of the 75th anniversary of diplomatic relations in 2027.

• Bilateral trade rose roughly 19% year-on-year in 2025 (Indian exports to Cambodia rising faster than Cambodian exports to India); 2026 was designated a Cambodia-India Tourism Year, with new direct flights (Delhi-Phnom Penh, Kolkata-Siem Reap) and a newly launched cross-border QR payment link.

• India continues funding Angkor-era heritage conservation (Preah Vihear, Ta Prohm) and positions Cambodia within its "Act East" policy and Global South diplomacy.

• Context: analysts describe the relationship as historically warm but underdeveloped relative to its potential — India was among the first states to recognize Cambodia's post-Khmer Rouge government in 1981, yet trade and defense ties still lag well behind China, the US, and even Japan.

### ASEAN & South China Sea

• The Philippines holds the 2026 ASEAN chairmanship, with both the Cambodia-Thailand border dispute and the long-stalled South China Sea Code of Conduct (COC) on its agenda; most regional analysts (Chatham House, 9DASHLINE) expect the Code will not be concluded within 2026 despite a nominal year-end target.

• Cambodia is a non-claimant in the South China Sea disputes but has historically been perceived as aligned with China's position, notably in 2012 (as ASEAN chair) and 2016, when Cambodia's objections contributed to ASEAN failing to issue joint communiqués referencing the dispute.

• China's mediating role in the Thailand border dispute since 2025 has renewed analyst speculation about Cambodia's room to maneuver on South China Sea language this year, given the perceived debt of gratitude to Beijing.

• Cambodia's stated position is that it adheres to international law and UNCLOS while treating the South China Sea as a matter for directly concerned states — distinct from its own bilateral border dispute with Thailand, which remains ASEAN's most pressing internal test case in 2026 alongside the Myanmar crisis.

• As of the ASEAN Foreign Ministers' Meeting in late July, the Philippines' 2026 chairmanship communique on the South China Sea was, per regional analysts, “functionally identical” to the one Malaysia issued the year before — the 2016 arbitral ruling remains absent from ASEAN's consensus language a full decade after it was handed down, and a July 20 clash between Philippine and Chinese vessels at Second Thomas Shoal drew no collective ASEAN member support for Manila.

• Context: the 2012 and 2016 episodes remain a reputational sore point for Cambodia within ASEAN; how Phnom Penh navigates COC-related language in 2026, while simultaneously depending on China's border-dispute mediation, is one of the more closely watched diplomatic balancing acts in the region this year.

***A note on future sourcing: starting with Issue No. 2, CaMSOb will invite relevant state institutions, embassies, and international organizations to share official updates — by email, on official letterhead — regarding their engagement with Cambodia, strengthening our sourcing with direct, quotable, primary confirmation.***

### Sources

*EEAS/EU Delegation to Cambodia, White House and USTR trade agreement texts, Cassidy Levy Kent and Brownstein trade law analysis, Khmer Times, Cambodianess, Construction & Property News, Australian DFAT country brief and development partnership plan, Cambodia Investment Review, Lowy Institute and CSIS Asia Maritime Transparency Initiative reporting on Ream Naval Base, Stars and Stripes and Defense News reporting, Indian Ministry of External Affairs and Embassy of India briefs, Chatham House and 9DASHLINE analysis on ASEAN and the South China Sea Code of Conduct, The Diplomat.*

*This supplement is compiled through research synthesis, not independent fact-verification. See the main CaMSOb brief for the full editorial disclaimer, which applies equally here.*

***© 2026 CaMSOb. All rights reserved.***