Improving crisis management may be the only area of consensus between China and the United States (US) regarding strategic security. Since 2020, increasing China–US competition, especially in the Taiwan Strait and the South China Sea, has led both states to become aware of the risk of inadvertent escalation. As a result, both have made frequent positive gestures indicating willingness to improve crisis management (Odell 2021; Detsch 2021). The Biden administration clearly stated that “the US seeks competition with China, but does not look for confrontation” (Biden 2021). During a phone call with Biden, President ** pointed out that “the China–US relationship is currently at an important juncture, and while the two sides may differ on some issues, it is crucial to show mutual respect, treat each other as equals, and properly manage and handle the differences in a constructive fashion” (** sea power effectively responds to the threat of war, doing so also increases the risk of friction and conflict (Gartzke and Lindsay 2020). Therefore, we may continue to observe a paradoxical trend: large-scale warfare at sea is relatively rare, while naval confrontation or friction is becoming more frequent.

Security relationships cannot be separated from the assessment of two factors: capabilities and intentions. Arms control deals with the quantifiable technical issue of capabilities, while confidence building addresses the more challenging and subjective matter of intentions (Griffiths 2010). However, both factors are difficult to assess. Because of the mobility and dynamic distribution of maritime forces, as mentioned above, there are few cases of successful arms control of sea power in history. Increasingly complex military systems have rendered the evaluation of mutual capacities almost impossible. Intentions are even more complicated to judge. First, every nation has differing maritime priorities and interests arising from their unique geographies, economies, histories, and political stances. Second, beyond being warfighting organizations like ground armies, navies also hold diplomatic and policing duties to maintain maritime order in peacetime (Griffiths 2010). The current conditions have made the tasks of navies more challenging and complicated.

1.2 Asymmetric and unbalanced capacities and interests

Whereas US and Soviet forces had comparable nuclear and military capabilities in the terminal phase of the Cold War, the China–US military balance will remain asymmetric for the foreseeable future. Washington’s weaponry, training, and systems integration today remain far ahead of Bei**g’s, notwithstanding the significant strides the People’s Liberation Army has made in recent years. Due to the lack of credible conventional deterrence between China and the US, this asymmetry will lead to instability (Goldstein 2013). Further, the struggle between the US and the Soviet Union was mainly focused in their overseas regions, such as Eastern Europe, Asia, Africa, and Latin America, and one did not usually pose a direct threat to the sovereignty and security of the other except through nuclear deterrent. Nor did either side of the US-Soviet competition feel that their obtained power decided by post-world war II order arrangement was being “taken away” or that what should have belonged to them should be “taken back” (Cossa 2008, 397–398).

China–US competition is primarily confined to the environs of the Chinese mainland, which places China at an obvious strategic disadvantage. Through its close relations with Chinese Taiwan Authorities and the deployment of American forces throughout East Asian waters, the US has long been involved in undermining China’s national unity, territorial integrity, and maritime rights. In contrast, China is currently far from being capable of projecting military power on a similar scale, i.e., from projecting power to the periphery of the US and intervening in its affairs. Moreover, in comparison with the general tolerance of the balance of power between the US and the Soviet Union in Europe during the Cold War, Bei**g and Washington still have not accepted each other’s areas of predominance and military presence in East Asian waters, including the East and the South China Seas and the Taiwan Strait (Layne 2020).

As a result, China will not be as open and confident as the US in the process of establishing crisis management mechanisms and negotiations. From the perspective of Bei**g, develo** a China–US code of conduct for military encounters would be like giving seat belts to speeders, effectively allowing Washington to manage the risks posed by its military operations in the region surrounding China (Campbell and Wyne 2020). Therefore, the two sides attach priority to different subjects during dialogues and negotiations. While China emphasizes national security as well as operational safety, the US mainly focuses on the freedom and safety of its own operations.

1.3 High transparency in the game environment

The confidentiality of interactions and centrality of decision-making have long been an enduring and important guarantee for the maintenance and development of the China–US relationship. However, it is now increasingly difficult to maintain these conditions. More entities have started to engage in and influence the decision-making process, adding more debate to each side’s policies towards the other. In addition, the strategic and tactical environments of the China–US crisis management game have become more transparent, handicap** bilateral crisis decision-making.

First, the strategic environment is becoming transparent. Broad participation from mass media and the public greatly influence the decision-making of governments around the world. Previously, great power military games were limited to the involvement of both sides’ leadership and professional command organs, which had a monopoly on control over the situation and critical information. Even people in military forces mostly took orders without having the whole picture of the situation. In today’s world, with increasing access to quality open-source data and global use of social media platforms, the public has more access to and knowledge of political and military information. Relevant issues and actions are openly discussed and are subject to public and international scrutiny. The “quiet diplomacy” approach, while highly successful in handling major emergencies and military crises, is hardly applicable in the current connected world because of this open game environment. The 2001 China–US EP-3 incident would not be resolved the same way if it occurred today, even if all other conditions remained the same, because the transparency of the current strategic environment would inevitably make resolution of the incident more difficult.

Second, the tactical environment is also becoming transparent. The development of persistent intelligence, surveillance, and reconnaissance (ISR) capabilities has enabled the provision of more precise, real-time battlefield information during both combat and confrontations. Even for amateurs, the overall state of combat and confrontation situations is not difficult to grasp. These advancements in ISR technologies are leading to a “zero-sum game” dilemma because of transparence in which neither side dares to step back. This dilemma is even more apparent in China–US maritime conflicts and confrontations in which both sides possess powerful situational awareness.

1.4 Differences in strategic culture

Jack L. Snyder was the first to give an academic definition to strategic culture, defining it as the sum total of ideals, conditioned emotional responses, and patterns of habitual behavior that members of a national strategic community have acquired through the instruction of imitation (Snyder 1977). The concept focuses on ideas and assumptions that influence national military choices of actions, especially ideas about wars, preference between offense and defence, and acceptance of injuries and deaths (Rosen 1995). In general, strategic culture is defined as a particular security and military vision that influences policymakers. The endurance of such modes of thinking qualifies them as manifestations of a “culture”, rather than mere policy (Al-Rodhan 2015). The strategic culture of a state is formed from a comprehensive survey of factors, including geopolitics, customs, historical memories, and political systems.

Due to their distinct geographical environments, historical experiences, and state systems, China and the US demonstrate substantial cultural differences in employing and exercising their armed forces. Previous great power competitions certainly witnessed differences in strategic cultures, but one as significant as the present difference between Chinese and US strategic culture was rarely seen. Since the end of World War II, Washington has employed an offensive policy of national defense, with its defensive perimeter expanding to the whole planet, including the environs of China. In contrast, Be**g sticks to a defensive policy of national defense, focusing its strategic priority on its lands and surrounding areas. This difference leads to distinct emphases in crises: the US prioritizes external influence while China regards territorial sovereignty as its core concern. Comparing actions taken by China and traditional great powers such as the US and Soviet Union in crises, Alastair Iain Johnston concludes that China attaches far greater importance to territorial sovereignty than other countries. He explains that China has formed a unique type of nationalism and anxiety with regard to its political legitimacy due to its experiences as a newly independent country with a 100 years of humiliation (Johnston 2016).

As peace is regarded as most precious in Chinese culture, China tends to be cautious in launching military operations and is not used to engaging in deterrence and matching responses. During crises, Bei**g usually resorts to diplomatic approaches such as condemnation, protest, and reasoning. Violence is avoided unless the situation is irretrievable. As Chinese diplomatic statements have lacked corresponding actions, the outside world is often misled and uncertain of China’s stance and bottom line. China is not good at taking preventive measures to address conflicts and crises before they break out. However, once they have broken out, China takes relatively aggressive reactive measures to avoid further losses. These measures have been negatively interpreted as belligerent and expansionist (Hu 2019). In comparison, as a country long in a state of war since its independence, the US emphasizes deterrence and preventive intervention and has shown a low threshold for using force towards other countries, especially after the Cold War.

Because Chinese culture emphasises stability and the big picture, China usually exercises restraint until a crisis has reached full confrontation or a full-scale war. Its emphasis on stability demonstrates that China has a restrained preference for “reducing major issues to minor ones, and then minor issues to naught”.Footnote 2 With regard to big picture considerations, during a crisis, military command at all levels, including frontline troops, consciously obey China’s macro plans for diplomacy and national defense while considering micro gains and losses. Further, China pays great attention to right and wrong and the determination of responsibility. When a crisis breaks out, the first Chinese reaction is not to manage the situation but to determine the responsible party. As a result of its concern over responsibility and national dignity, Bei**g sometimes pays more attention to symbolic gestures such as public apologies (Wu 2000). There appears to be some consensus among scholars and practitioners that mobility innovations favor offense, whereas firepower innovations favor defense (Lieber 2000).

Although no large-scale naval battles among great powers have occurred since the Second World War, many technologies have been developed since then. Some of the newer technologies include nuclear submarines, air defense systems, stealth missiles, and vertical launch systems. The latest innovations, such as cyberweapons, anti-satellite weapons, hypersonic missiles, long-range anti-ship missiles (LRASMs), quantum computing, and artificial intelligence, have greatly compounded uncertainty (Caverley and Dombrowski 2020b; Horowitz 2019). Maritime military systems have become so complex that the boundaries between land, sea, air, space, and cyberspace are now blurred (Schneider 2019). Maritime military competition has become the confrontation in all domains with all the services and arms involved. For the first time in history, maritime military competition spans all services and domains. Therefore, it has become increasingly difficult to evaluate one’s own capabilities as well as those of rivals, making it difficult to implement arms control and establish mutual trust.

The application of unmanned systems and autonomous weapons also impairs political and moral restrictions on the utilisation of military force, which may lower the threshold for military conflict. Further, autonomous weapons may also be disturbed by electromagnetism or algorithmic errors, resulting in miscalculation or misoperation. Continued advances in offensive cyber capabilities increase the risk of inadvertent escalation, potentially up to the nuclear level, making the impoverishment of US–China military ties and the deteriorating security environment in the Asia–Pacific even more concerning (Campbell and Wyne 2020). Today, neither China nor the US is confident in its ability to manage conflicts to prevent escalation into nuclear war.