Malaysians have reacted with sarcasm and disbelief to an Indonesian official’s claim that his country provides the region’s oxygen, as toxic smoke from forest fires in Sumatra and Kalimantan chokes neighbouring nations. Syahganda Nainggolan, head of Indonesia’s government communications agency, prompted the backlash after invoking his country’s forests when questioned on Saturday about the severe smog that has forced school closures and triggered health warnings across Malaysia and...