Iraqi security forces are suffering major setbacks in Anbar and Baiji – areas that Prime Minister Haider al-Abadi has identified as the most important fronts in the war with the Islamic State (IS) militant group. Following its successful operation to retake Tikrit, the Iraqi government has planned major campaigns to reassert control of Anbar province, an IS stronghold, and the Baiji area of Salahaddin province, which includes the country’s largest oil refinery. But the IS group, which…