Facing growing pressure, Indonesia earlier this month agreed to accept international help after failing for weeks to douse the fires from slash-and-burn farming that have shrouded angry neighbours Malaysia and Singapore in smoke for weeks.
But Malaysia was forced once again to close schools in several areas today due to unhealthy air, and Natural Resources and Environment Minister Wan Junaidi Tuanku Jaafar said the crisis could continue for another month.
Even the multi-nation effort now under way "is not enough to put out the fires," he added.
"We hope the rains will come in mid-November. It will be able to put out the fires," Wan Junaidi said.
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On Friday, Indonesia launched its biggest fire-fighting assault yet, with dozens of planes and thousands of troops battling the illegally started agricultural and forest fires in its territory on the huge islands of Sumatra and Borneo.
The fires and resulting region-wide haze are an annual dry-season problem, but experts warn the current outbreak is on track to become the worst ever, exacerbated by tinder-dry conditions from the El Nino weather phenomenon.
The acrid air has sparked health alerts, sent thousands to hospitals for respiratory problems, and caused the cancellation of scores of flights and some major international events across the region.
Indonesian National Disaster Management Agency spokesman Sutopo Purwo Nugroho also offered sobering comments today, saying the fires were "yet to be overcome."
"The actual number is higher as the satellite is not able to penetrate the thickness of the haze in Sumatra and (Borneo)," he added.
Malaysia enjoyed a brief spell of lowered haze last week, but the government -- which has repeatedly ordered school closures as a health precaution -- did so again today as skies once again reverted to the now-familiar soupy gray.
Schools were closed in several states and in the capital Kuala Lumpur as pollution levels climbed well into the "unhealthy" range under the government's rating system.