US campaign against Islamic State in Syria 'intensifying'

The US-led coalition fighting the Islamic State group is "intensifying" its campaign in northern Syria, President Barack Obama says.

Speaking at the Pentagon, Mr Obama said the US would not send additional troops to Syria but would increase support for the country's moderate opposition.

He added that "an effective partner on the ground" was needed to defeat IS.

It comes as IS militants were reported to have regained control of the town Ain Issa from Kurdish-led forces.

Mr Obama's remarks followed some of the heaviest bombing of IS since coalition strikes began in September last year.

The bombing targeted Raqqa, IS's de facto capital in Syria.