Since Russia’s invasion of Ukraine, the strategic position of many European governments has undergone a dramatic reorganisation, encapsulated by then-Chancellor Olaf Scholz’s Zeitenwende address to the Bundestag three days after the invasion. Although far less prominent in this sea of change, similar debates on the country’s defensive future in this new European security environment also occured in Ireland. This study will examine if the changes proposed or implemented in Ireland’s defence and security policies since Russia’s invasion represent a real shift in the Republic’s defence policy -an Irish Zeitenwende or Cor Cinniúnach- or if this is a case of rhetoric overshadowing action. The paper will analyse the shift in the Irish security landscape both domestically and in the country’s international relations, from the invasion to the present, taking into account the release of the new Programme for Government following the general election in 2024, as well as the potential impact of future changes in the country’s internal politics and relations with Northern Ireland.