The United Kingdom ranks 10^th in the 2021 Network Readiness Index (NRI), 9^th in the 2021 Digital Skills Gap Index and 14^th in the 2021 IMD World Digital Competitiveness Ranking. The British digital sector contributes roughly £149 billion each year to the economy and employs more than 1.5 million people [x]. The country also remains Europe’s unofficial ‘start-up capital’, with British tech startups attracting more than $15 billion in venture capital investment in the midst of a global pandemic. Nevertheless, new and emerging challenges to peace and security in cyberspace represent pressing concerns for the UK [x]. Over the course of 2021, the UK’s National Cyber Security Centre dealt with 777 significant incidents, with around 20% of supported organisations being linked to the health sector and Covid vaccines [x]. In the face of ever-increasing cyber vulnerabilities, the UK government has recently adopted a strategy of ‘levelling up’ protection for British cyberspace. This has brought international collaboration on cyber issues to the forefront of Britain’s diplomatic agenda. British diplomacy has traditionally championed the rules-based international system both online and offline, placing great emphasis on human rights, democratic values and free trade.

Japan is a trusted partner and shares the same basic values of human rights, rule of law, and democratic governance. This common set of values also applies to cyberspace as both the EU and Japan have publicly expressed strong support for an open, free and secure internet and the application of international norms to state activities in cyberspace. Japan is also an important trading partner of the EU. The recently adopted Economic Partnership Agreement also reinforces the need for a closer integration of the digital economies. Alignment in broader international economic and political issues is also evident in the field of cyber diplomacy and thus constitutes a strong foundation for close cooperation and partnership.

As of 2009, Ukraine has been a member of the Eastern Partnership (EaP) and a strategic partner for the EU. On the basis of the EU-Ukraine Association Agreement (AA) signed in 2014, the country has engaged in legislative and policy reforms aiming at gradual convergence with the EU acquis, including on digital economy. During the past two years, digitalisation has become a “flagship topic” in Ukraine, with a growing focus on e-government, digital citizenship, and state support for the local IT industry. Ukraine suffered large-scale cyberattacks during the 2014 presidential elections [x], distributed denial of service (DDoS) attacks during the Russian invasion of Crimea in 2014 [x], malware attacks on its power grid in 2015 [x], and was also heavily impacted by the devastating global-scale NotPetya attack in 2017. This explains why Ukraine prioritised capacity building efforts to strengthen its cyber resilience.

The UK views international law as “a critical tool for ensuring stability and security in cyberspace”. In accordance with the 2013, 2015 and 2021 UNGGE reports as well the 2021 OEWG report, the UK has affirmed that international law, including the UN Charter in its entirety, applies in cyberspace; a position paper notably states that “we do not consider it is for States to pick and choose which international law instruments are applicable”. This includes the prohibition of the use of force (Article 2(4)), the peaceful settlement of disputes (Article 33) and the inherent right of states to act in self-defence in response to an armed attack (Article 51). The law of state responsibility applies to cyber operations in peacetime, including the doctrine of countermeasures in response to internationally wrongful acts. Meanwhile, the country has professed a strong commitment to the respect of human rights law in cyberspace, co-sponsoring the 2012, 2014, 2016, 2018 and 2021 UN Human Rights Council resolutions on the protection, promotion and enjoyment of human rights on the Internet. Likewise, the UK believes in the application of international humanitarian law (IHL) to cyber operations in armed conflict. In response to concerns expressed by other states that this might lead to an undue ‘militarisation’ of cyberspace, the UK has responded that the application of IHL does not encourage armed conflict but only serves to limit humanitarian consequences in the event of such conflict. In addition, the country has stated and that there are ways for cyber capabilities to be developed in a manner “consistent with international law” and called on states to be transparent about the existence of their own capabilities. Those statements do not entirely dismiss the idea of cyberspace as a new military domain, with the British position at the OEWG being that “the use of ICTs in military contexts may be preferable to use of kinetic weapons and can be de-escalatory”. The UK is against the establishment of new, binding international instruments to regulate state behaviour in cyberspace, arguing that “pursuing […] the development of new treaties is only likely to entrench existing divides in this area and will progress us no further on the question of how International Law applies”.

Japan has highlighted the importance of promoting the rule of law in cyberspace, noting that cyberspace “should not be a lawless zone”. It further endorses the applicability of international law, in particular the UN Charter, in the cyber domain. In relation to the use of countermeasures, it has stated that it is not necessary for countermeasures to be limited to the same means as internationally wrongful acts. 
Japan has cautioned against the launch of “premature” discussions on developing a legally binding new instrument, arguing that the adoption of such an instrument might “roll back” the achievement of past multilateral efforts in confirming the applicability of existing international law in cyberspace. Instead, Japan believes that it is necessary to consolidate, elaborate, and clarify the interpretation of existing treaties and content of customary international law. 
During the drafting phase of the 2021 Open-Ended Working Group (OEWG) Report, Japan had proposed to include language explicitly affirming the applicability of State responsibility for internationally wrongful acts, the inherent right of self-defence recognized under the UN Charter, and International Humanitarian Law.

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The UK regards voluntary, non-binding norms of responsible state behaviour as one of the three key pillars upon which the framework for international stability in cyberspace is currently built, the other two being international law and confidence-building measures (CBMs). The British have argued that “stronger awareness and understanding by all countries of the framework in general” is necessary and stated that they “remain concerned that the elaboration of new norms could undermine the existing norms by weakening the overarching protection they provide, or their technology neutral and ‘future-proofed’ nature”. The focus should instead be on the universalisation, operationalisation and implementation of existing norms, with regional organisations and capacity-building efforts playing a central role in this endeavour.

In multilateral fora, Japan has frequently emphasised the need to implement voluntary and non-binding norms of responsible state behaviour in cyberspace. The country believes that any discussion on norm-building should exclusively occur on the basis of the 11 norms affirmed within the 2015 UNGGE Report; possible new norms should be “carefully scrutinised” so as to avoid any change to these 11 norms or duplication with them. 
Japan also strongly opposes the adoption of additional legally binding obligations, maintaining that such an endeavour would take a very long time whereas the evolution of technology is extremely fast-paced. Instead, countries should work on parallel mechanisms for capacity-building, raising awareness, and promoting a common understanding of norms.

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The July 2021 policy paper on Global Britain in a Competitive Age makes extensive reference to resilience in the post-Covid ICT environment, pledging that the UK will “strengthen global resilience” and “ensur[e] that more resilient countries worldwide can come together through stronger international institutions to act on the most pressing shared challenges”. In the cyber domain, this pledge has been further operationalised by the 2022 National Cyber Strategy, which frames cyber resilience in terms of risk awareness, system security and preparedness. The Strategy prioritises capacity building, adopting a whole-of-government approach and focusing on three elements: protecting critical international supply chains and infrastructure, advancing the secure use of digital technologies and working with industry partners and academia. Since 2016, the UK has worked through the National Cyber Security Centre (NCSC) to adopt an integrated approach to cyber incident management, streamlining across the public and private sectors. Meanwhile, Britain has championed
capacity-building assistance efforts abroad by providing advice, training and exercises and enabling the creation and maintenance of national Computer Security Incident Response Teams (CSIRTs). It has also provided funding to international capacity-building platforms, such as the Forum of Incident Response & Security Teams (FIRST) and the Americas CSIRT network. The UK has been working with partners within the OSCE to encourage the implementation of confidence-building measures (CBMs).

Resilience constitutes one of the central objectives of Japan’s 2018 Cybersecurity Strategy, whose core components include international cooperation in sharing expertise and coordination of policies, incidence response, and cyber capacity-building (CCB). Japan has traditionally argued that global initiatives are required to reduce cybersecurity vulnerabilities and has advocated for a tailor-made approach that takes into account the national situation of recipient countries and the importance of national ownership. 
Japan recognises the ‘trickle-up’ effect of national initiatives, stating that CCB “not only improves the capabilities of the recipient country, but also directly leads to enhanced security and stability in cyberspace as a whole”; in that sense, it disfavours the understanding of CCB as a “common but differentiated responsibility”, believing that such a view “does not fit the context” of international cyber cooperation. As a result, the country has assumed a balanced approach to CCB. On the one hand, it has successfully utilised multilateral fora such as the G7 and G20 summits to promote its own normative standards. 
At the G7 Ise-Shina Summit in May 2016, for instance, Japan introduced the Ise-Shima Principles, which included the enhancement of cooperation on CCB. On the other hand, Japan considers its own security and that of its nationals as intrinsically tied to the cyber capabilities of developing countries, since attacks on the IT infrastructure of regional partners can adversely affect Japanese trade. Japan has thus acted primarily through ASEAN to promote regional capacity-building efforts.

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According to the 2022 National Cyber Strategy, the UK is committed to promoting the Council of Europe’s Budapest Convention on cybercrime as the primary international instrument for inter-state cooperation, while simultaneously engaging constructively with the UN process to develop a new international cybercrime treaty that will sit comfortably alongside the Budapest regime. In terms of law enforcement, the UK has developed well established mechanisms through the National Cyber Crime Unit (NCCU), operating under the umbrella of the National Crime Agency (NCA). The NCCU is tasked with leading the operational response, coordinating activity across different stakeholders and providing specialist cyber support across the law enforcement domain. The NCA has also developed a network of international liaison officers, which regularly cooperate with Interpol and Europol. Bilateral cooperation with international partners occurs on the basis of the Budapest Convention and associated Mutual Legal Assistance Treaties (MLATs), which facilitate information sharing amongst signatory states. The UK has been an active participant – and has provided voluntary contributions – in the context of discussions for developing a Second Additional Protocol to the Convention to enhance the speed and efficiency of international evidence sharing; the Protocol will be opened for signature in May 2022. The UK has also provided capacity-building assistance to over 100 partner countries, especially in Eastern Europe, Southeast Asia and Africa.

According to Japan’s 2018 Cybersecurity Strategy, the country is committed to “further [promoting] international partnership through international investigative cooperation and information sharing with international organisations, law enforcement agencies and security information agencies in foreign countries.” 
Japan is a party to the Budapest Convention on Cybercrime and mutual assistance treaties (MLAT), voting against the Russian-sponsored UNGA resolution calling for a new binding cybercrime treaty. Japan has pursued dialogues related to cybercrime cooperation in the context of ASEAN, as well as on a bilateral basis with countries like the UK, USA, and Australia.

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