After a decade of uprisings and conflict, what is going on with Yemen’s politics, political parties, and mobilization, as Saudi Arabia announces a new UN-supervised ceasefire proposal to end the conflict? The General People’s Congress (GPC, the party of former president Ali Abdullah Saleh) and Islah (which rallies the Muslim Brotherhood, part of the Salafis and the conservative-business-tribal milieu) are Yemen’s main political parties. They would play a pivotal role, if there was a comprehensive political settlement, due to their nationwide reach and institutional expertise. However, Yemen’s political landscape has deeply transformed since 2011: former peripheral actors such as Ansar Allah (the Houthis), Southern competing groups, and a variety of local players have contributed to fragmenting and redrawing the country’s political marketplace. This ISPI Dossier, in collaboration with the Yemen Policy Center, analyses Yemen’s old and new political parties and movements, assessing their identity, evolution, armed wings, and leadership towards a post-conflict horizon.