Since the beginning of the Russian invasion of Ukraine on the 24th of February 2022, the JRS has been on the frontlines of humanitarian response, working with those who have been forced to flee their homes. This International Armed Conflict between Russia and Ukraine has displaced millions of people, something which constitutes the largest humanitarian crisis in Europe since the Second World War. Following the completion of an in-depth needs assessment mission to those working on the ground, JRS Europe is coordinating a single, unified response from the Society of Jesus in Europe to the crisis: The One Proposal. Through this proposal, JRS and partners will accompany, serve, and advocate for refugees fleeing conflict in Ukraine over the course of the next three years. It will address their needs across Europe, from the immediate humanitarian response and emergency assistance in Ukraine and its neighbours, to long-term programmes to promote and integrate refugees from Portugal to Poland. This response will be coordinated by JRS Europe, and implemented jointly with 22 JRS Country Offices, the Society of Jesus in Europe, local civil society, NGOs, and a network of 6 development agencies of the Xavier Network.