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The draft report was further developed and revised on the basis of a literature review, rounds of extensive revision and input from ACAPS economists. These scenarios were developed in January 2020 through team mapping and analysis exercises by four Yemen researchers, validated through interviews with key stakeholders. This would cause food prices to almost double again, increasing food insecurity and pushing Yemenis into a heavier reliance on humanitarian aid, regional patronage and negative coping mechanisms, including criminality and informal taxation. With this financial support coming to an end, and no alternative financing in place, Yemen could see the riyal lose almost half its value over the coming six months. Saudi financial support to Yemen’s economy, worth over $2.2 billion since March 2018, has been crucial in helping Yemen to escape economic collapse. Rather, they describe situations that could occur in the coming six months and are designed to highlight the possible impacts and humanitarian consequences associated with each scenario. Since then, the conflict has resulted in over 100,000 casualties, displacement, severe access constraints, and an economic downturn affecting food and fuel, leaving approximately 24.3 million people (80 per cent of the population) in need of humanitarian assistance. These four scenarios are not attempts to predict the future. Conflict between the internationally recognised Government of Yemen (GoY) and the Houthi movement escalated following the Houthi takeover of the capital, Sana’a, and the consequent intervention of the Saudi-led coalition in support of the government in March 2015. Conflict, spread of diseases, economic crisis, and the breakdown of institutions are driving high levels of humanitarian need. More than five years of war have pushed millions of Yemenis into increasingly desperate coping mechanisms.