Friday Roundtable: The state of the world stage

Iraqi Sunni volunteers
Iraqi Sunni volunteers from the Anbar province, who joined Iraq's Popular Mobilisation force as part of government efforts to make the fight against the Islamic State (IS) group a cross-sectarian drive, show their skills during their graduation ceremony at the Habaniyah military base, near Anbar province's capital Ramadi, on June 17, 2015.
Ahmad Al-Rubaye | AFP | Getty Images