One year on since the Islamic State (IS) announced a so-called caliphate across swathes of Iraq and Syria, a 60-nation anti-IS coalition meets for a second time in Paris on Tuesday, against the backdrop of recent territorial gains and new reports of atrocities by the group.

On the eve of the conference, VICE News spoke to UK Foreign Secretary Philip Hammond to discuss the country's contribution to the coalition and the progress in the fight against IS.

Watch "The Battle for Iraq: Shia Militias vs. the Islamic State"

Read "Islamic State Says Barrel Bomb Dropped By Syrian Regime Caused 'Devastating Massacre"