Barack Obama to discuss war on Islamic State with G20 leaders: White House

Washington: US President Barack Obama is expected to discuss the fight against the Islamic State (IS) militant group with US allies during an upcoming summit of Group of 20 economies, the White House said on Tuesday.

"It'd be impossible to travel all the way over there and not spend some time thinking about and talking about our ongoing effort to degrade and ultimately destroy IS," Xinhua quoted the White House spokesman Josh Earnest as saying.

"So I would anticipate that would be part of the President's visit," he said.

Leaders of the world's 20 biggest economies, including the United States, China, Japan, Russia, Canada, Australia and Brasil, are to meet next Sunday and Monday in the Turkish sea resort of Antalya to discuss global economic issues.

Many countries participating in the summit are also part of the US-led coalition against IS, Earnest added.

The US-led coalition has been bombing IS targets for more than a year.