The paper provides indications and analysis of the positions of the most influential Shia powers and parties in Iraq after the fall of the predominantly Sunni city of Mosul and the rise of the Islamic State group in 2014. In addition to the Najaf-based supreme Shia religious authority led by ayatollah Ali al-Sistani, the Shia parties represented in government since 2003, the paper shed light on the increasingly powerful Iran-backed armed groups Popular Mobilization (Hashd Sha'abi) and how their appeal, visibility and influence had changed after the fall of Mosul. The question of the Iraqi national identity and how it interacts with the Shia identity is addressed in the paper in light of the discourse of the Shia powers and relations between Shia Iraqis and other communities.