“This can’t be America’s fight alone,” US President Barack Obama stressed in his ISIS speech. Indeed, about 40 countries have joined the battle with the radical group that’s left scores dead in Iraq. But who does what on that battlefield?

The main role is still with the US, which has already carried out over 150 airstrikes against the Islamic State (also known as the Islamic State of Iraq and the Levant, or ISIS/ISIL).