This Introduction contextualises this special anniversary issue of the journal. The Editors of a previous 2013 special issue of the EJIR (The End of International Relations Theory?) asked if the paradigmatic “theoretical cacophony” in IR was deep and irresolvable. We argue that there is still very much a conversation going on across ‘generalist’ and specialised IR journals, and that renewal and broadening is more important than boundaries per se. Meanwhile the field of International Relations has continued to broaden, absorbing much from other social science disciplines in the process. Yet IR has a problematic relationship with interdisciplinarity, often discovering as ‘new’ what other fields have long debated and in turn ‘domesticating’ these insights from other fields by fitting them into existing IR paradigms. This special issue is thus aimed above all at what ‘we’ in IR are not seeing from other disciplines, and we go on to argue how IR scholars might best employ ‘transdisciplinary’ insights to ensure the future dynamism and innovation of the field. We argue that in this context, a special effort of critical and open engagement with work that makes us uncomfortable is required and that the very notion of inter-disciplinarity takes on a new form.

本导言结合了该杂志的周年纪念特刊。EJIR（国际关系理论的终结？）2013年上一期特刊的编辑问道，IR中的范式“理论上的刺耳”是否深刻而无法解决。我们认为，“一般主义者”和专业IR杂志之间仍在进行大量对话，而更新和拓宽比界限本身更重要。同时，国际关系领域不断扩大，并在此过程中吸收了其他社会科学学科的很多东西。然而，投资者关系与跨学科关系存在问题，经常发现其他领域长期争论的内容是“新的”，然后通过将它们适合现有的投资者关系范式来“驯化”其他领域的见解。因此，本期特别针对的是IR中“我们”在其他学科中没有看到的东西，并且我们继续争论IR学者如何最好地利用“跨学科”见解来确保该领域的未来活力和创新。我们认为，在这种情况下，需要批判性和开放性地投入工作，使我们感到不舒服，这需要付出特殊的努力，而跨学科的概念也呈现出新的形式。