称“未来航空作战系统合作” (FCASC) 备忘录是“保持欧洲和世界军事工业能力平衡的关键”，该协定表明“三国平等基础上的合作原则涵盖政府为采购先进航空系统以取代欧洲战机项目组织的研究、发展和联合构想必需的所有方面”。
Italy, UK and Sweden sign MoU on development of Tempest
Italian Defence Minister Lorenzo Guerini, UK Secretary of State for Defence Ben Wallace, and Swedish Defence Minister Peter Hultqvist signed a trilateral memorandum of understanding (MoU) on 21 December on the development of the Tempest future fighter, the Italian Ministry of Defence (MoD) announced in a press release on 3 January.
Describing the Future Combat Air System Cooperation (FCASC) MoU as “crucial for the balance of military and industrial capabilities at the European and global level”, the ministry said the agreement defines “the general principles for co-operation on an equal basis between the three countries comprising all activities including research, development and joint concepting necessary for governments to acquire an advanced air system to replace Eurofighter”. The MoD added, “The agreement will be followed by the project arrangements and the full development phase, currently scheduled to begin in 2025.”
As underlined by Guerini during the presentation of the Documento Programmatico Pluriennale (Multiyear Planning Document, DPP) 2020–2022 to the Italian parliament in November, “The Tempest programme is among the defence priority programmes,” according to the MoD press release, which said “a first important budget line for Italian participation in Tempest was clearly identified within the Eurofighter programme to allow for the concrete start of activities through the so-called ‘Typhoon to Tempest’ [technological] transition”.