Weekly roundup: US appoints a special envoy to Iraq

• US Special Envoy to Iraq appointed

• US Secretary of State speaks with Prime Minister

• National Security Advisor travels to Tehran

• Five suspects arrested in killing of electoral candidate

• Turkey extends military operations in Iraq

• Iraq signs MoU with Turkmenistan

• Iraq condemns approval of two Israeli laws

• Swiss Foreign Minister travels to Baghdad

• Iraq commemorates centennial of first Iraqi constitution