Country Security Report

China Security Report — March 17, 2026

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Published March 17, 2026 — 06:06 UTC Period: Mar 10 — Mar 17, 2026 9 min read (1949 words)

China Security Report — March 17, 2026

Security analysis based on open-source intelligence and web research. Period: March 10 — March 17, 2026.

Executive Summary

During the period of March 10-17, 2026, China demonstrated a continued focus on strengthening its military capabilities and asserting its geopolitical influence, particularly through a significant increase in its defense budget and more assertive rhetoric towards Taiwan. Diplomatic efforts were evident in high-level engagements with Vietnam and ongoing trade discussions with the United States, despite underlying tensions. Cybersecurity threats from China-linked actors targeting Southeast Asian militaries highlighted persistent espionage activities. Concurrently, China maintained a cautious but supportive stance towards Iran amidst Middle East conflicts, while also facing challenges to its maritime claims in the South China Sea. These developments underscore China's dual strategy of internal modernization and external strategic positioning, with notable implications for regional stability and major power relations.

Key Security Developments

Increased Defense Budget and Modernization Drive
China proposed a defense budget of approximately 278 billion US dollars for 2026, representing a 7 percent increase compared to 2025. This increase, announced during the annual "Two Sessions" legislative meeting, reflects a continued commitment to the People's Liberation Army (PLA) modernization, even amidst slowing economic growth. The government emphasized that defense spending is aligned with economic development and aims to safeguard national sovereignty, security, and development interests.
Heightened Rhetoric Towards Taiwan
The 2026 government work report adopted more bellicose language regarding Taiwan, changing the phrase "oppose Taiwan independence" to "crack down on Taiwan independence." This combative phrasing reflects China's expanding coercive efforts against Taiwan following the election of President William Lai Ching-te.
Fluctuating PLA Air Force Activity Near Taiwan
After an unusual cessation of activity since February 27, the PLA Air Force (PLAAF) resumed large-scale air activities near Taiwan on March 16. This follows a period where only sporadic, small-scale incidents were reported, and no official explanation for the initial lull was provided by China.
US Arms Sales to Taiwan Proceeding
Taiwan's Defense Minister Wellington Koo stated on March 17 that the US' internal review process for a second package of arms sales to the island, valued at approximately US$14 billion and including advanced interceptor missiles, is proceeding on schedule. This comes despite US President Donald Trump's stated intention to delay his visit to China due to the Iran war.
China-Linked Cyberespionage Campaign in Southeast Asia
Palo Alto Networks reported on March 16 that a China-linked state-sponsored threat actor, tracked as CL-STA-1087, has been conducting a multi-year cyberespionage campaign targeting Southeast Asian military organizations. The attackers deployed custom tools like AppleChris and MemFun backdoors, remaining dormant in compromised environments for months to collect highly specific files on military capabilities and collaborative efforts with Western armed forces.
Diplomatic Engagement with Vietnam
The first ministerial meeting of the China-Vietnam "3+3" strategic dialogue on diplomacy, defense, and public security was held in Hanoi, Vietnam, from March 15 to 17, 2026. This mechanism, the first of its kind established by both countries, aims to deepen strategic coordination, safeguard political security, and enhance cooperation in areas like cybersecurity and law enforcement.
Stance on Middle East Conflict and Strait of Hormuz
China urged an immediate halt to military operations in West Asia and called for the reopening of the Strait of Hormuz, which has been effectively closed due to the US-Israel war on Iran. While China is Iran's largest trading partner and primary oil buyer, it has avoided formal defense commitments to Iran, limiting support to diplomatic statements and dual-use supplies like sodium perchlorate for rocket fuel.
Continued South China Sea Disputes
The Philippines officially rejected Beijing's assertion of sovereignty over the entire South China Sea and the disputed Scarborough Shoal on March 16. Meanwhile, Vietnam is rapidly expanding its military bases and land reclamation efforts across 21 reefs, shoals, and sandbanks in the contested Spratly Islands, with the scale of operations reportedly surpassing China's in some areas.
Focus on Emerging Technologies in 15th Five-Year Plan
The draft outline of China's 15th five-year plan (2026-2030) places heavy emphasis on emerging technologies, including advanced computing, data infrastructure, and artificial intelligence (AI). China aims to "seize the commanding heights" of technological development, viewing it as crucial for both economic growth and transforming the nature of warfighting.
US-China Trade Talks and Trump's Visit
High-level economic and trade talks between Chinese Vice Premier He Lifeng and US Treasury Secretary Scott Bessent took place in Paris, with both sides agreeing on the benefits of stable bilateral economic and trade relations. US President Donald Trump's anticipated visit to Beijing in late March/early April is being discussed, though a delay of about a month is being sought by Trump due to the Iran war.
Public Opinion on Taiwan Unification
A survey conducted by the US-based Carter Center and Emory University, released on March 17, indicated that the Chinese public largely disfavors military unification with Taiwan, with 86 percent supporting cultural ties and 81 percent favoring economic interaction. While 81 percent would support limited military operations on outlying islands if Taiwan declared independence, only 32 percent expressed support for a full-scale military attack.

Geopolitical Impact and Regional Dynamics

China's security developments this week have significant geopolitical ramifications, particularly in East Asia and the Middle East. The increased defense budget and more aggressive rhetoric towards Taiwan signal a hardening of Beijing's stance on its core territorial claims, potentially escalating tensions across the Taiwan Strait. This, coupled with the resumption of large-scale PLAAF activities, could be perceived as a direct challenge to regional stability and a test of the international community's resolve. The ongoing US arms sales to Taiwan, despite Chinese objections, further complicate cross-strait dynamics and underscore the deep strategic divergence between Washington and Beijing.

In the South China Sea, the Philippines' rejection of China's sovereignty claims and Vietnam's accelerated island-building activities highlight the persistent and intensifying territorial disputes. These actions contribute to a complex and potentially volatile maritime environment, where the risk of miscalculation remains high. China's long-standing claims, often asserted through its Coast Guard, continue to be a source of friction with ASEAN claimants and external powers like the United States, which advocates for freedom of navigation. The "3+3" strategic dialogue with Vietnam, while aiming for cooperation, also reflects China's efforts to manage bilateral relations within a competitive regional landscape.

China's cautious approach to the Middle East conflict, particularly regarding Iran and the Strait of Hormuz, demonstrates a strategic balancing act. While Beijing benefits significantly from Iranian oil imports and maintains a "comprehensive strategic partnership," it avoids formal military commitments that could jeopardize its broader international standing or relations with other Middle Eastern partners. This selective engagement allows China to project an image of a responsible global power advocating for de-escalation, while simultaneously securing its energy interests and subtly undermining US sanctions through dual-use technology transfers. The potential delay of President Trump's visit due to the Iran war further illustrates how global flashpoints can directly impact the delicate US-China relationship.

Military and Defense Analysis

China's military and defense posture continues to be characterized by a robust modernization program, underpinned by a consistently increasing defense budget. The 7 percent increase for 2026, reaching approximately $278 billion, demonstrates a sustained commitment to enhancing the PLA's capabilities, even as the national economic growth rate slows. This spending is directed towards achieving "military transformation with Chinese characteristics" and safeguarding national interests.

A key aspect of this modernization is the strong emphasis on emerging technologies, as outlined in the 15th five-year plan. China aims to "seize the commanding heights" in advanced computing, data infrastructure, and artificial intelligence (AI), recognizing their transformative potential for future warfare. This focus on military-civil fusion and "intelligentization" suggests a strategic effort to integrate cutting-edge civilian technologies into defense applications, aiming for dominance in critical domains.

In terms of capability developments, the PLA's Eastern Theater Command (ETC) is reportedly improving its ability to support amphibious operations in the Taiwan Strait, including enhanced air defense and anti-submarine warfare (ASW) support. The addition of Type 055 destroyers to the ETC fleet would significantly boost its air defense against anti-ship missiles and enemy aircraft, and their numerous Vertical Launch System (VLS) cells could enable precision-strike campaigns ahead of amphibious landings. The reported arming of Serbian MiG-29s with Chinese LS-6 guided bombs also indicates China's growing influence in the global arms market and its capability in precision-guided munitions.

Outlook and Forecast

Short-term trends (1-3 months): In the immediate future, China is likely to maintain its assertive posture regarding Taiwan, with continued military exercises and diplomatic pressure. The "crack down on Taiwan independence" rhetoric will likely be sustained, potentially leading to increased gray-zone operations around the island. US-China relations will remain complex, characterized by ongoing trade disputes (e.g., Section 301 investigations) and the highly anticipated, though potentially delayed, visit of President Trump. China will continue to carefully navigate the Middle East crisis, balancing its economic interests in Iranian oil with its desire to avoid direct military entanglement. In the South China Sea, tensions are expected to persist, with both China and other claimants like Vietnam continuing to assert their presence and develop infrastructure.

Critical flashpoints and risk areas: The Taiwan Strait remains the most critical flashpoint. Any perceived move towards formal independence by Taiwan or significant escalation of US military support could trigger a strong Chinese response. The South China Sea is another high-risk area, where increasing military presence and infrastructure development by multiple claimants raise the potential for accidental clashes. The US-China trade relationship could also become a flashpoint if new tariffs or sanctions are imposed following the Section 301 investigations, potentially leading to retaliatory measures. Furthermore, China's continued support for Iran, particularly through dual-use supplies, could exacerbate tensions with the US and its allies, potentially leading to secondary sanctions or diplomatic repercussions.

Indicators to monitor: Key indicators to monitor include the frequency and scale of PLA military activities near Taiwan, particularly air and naval incursions into Taiwan's Air Defense Identification Zone (ADIZ) or territorial waters. Statements from Chinese officials regarding Taiwan and the South China Sea should be closely watched for any shifts in tone or policy. The outcomes of US-China trade talks and the specifics of President Trump's visit, if it occurs, will be crucial for assessing the trajectory of bilateral relations. Developments in the Strait of Hormuz and China's response to calls for its reopening will indicate its willingness to exert influence in the Middle East. Finally, reports on China's progress in developing key emerging technologies, especially AI and advanced computing, will offer insights into its long-term military modernization goals.

Strategic recommendations: For regional actors and major powers, maintaining clear lines of communication with Beijing is paramount to prevent miscalculation, especially in flashpoint areas like the Taiwan Strait and the South China Sea. Diversifying supply chains and reducing reliance on China for critical goods could mitigate risks associated with potential trade disputes. Strengthening regional security partnerships and multilateral frameworks can provide a collective deterrent against aggressive actions. For the US, a consistent and coordinated approach to Taiwan, balancing support for its self-defense with diplomatic engagement with Beijing, is essential. Monitoring China's dual-use technology transfers to countries like Iran and addressing them through diplomatic and economic means should be a priority. Finally, continued investment in advanced defense capabilities and intelligence gathering will be crucial to counter China's rapid military modernization and cyberespionage efforts.

Sources

Grounding Sources (21)

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