Indonesia and Sri Lanka hit hardest as climate change-boosted monsoon flooding wreaks havoc across Southeast Asian nations.

By Willy Kurniawan PALEMBAYAN, Indonesia, Dec 1 (Reuters) - The death toll from cyclone-induced floods and landslides in Indonesia passed 600 on Monday as rescuers battled to clear roads and improved weather conditions revealed the scale of a disaster that has killed nearly 800 people in Southeast Asia.

Satellite imagery captured the extent of the flooding that devastated parts of South East Asia in late November, killing at least 1,200 people.These images, captured by Planet Labs PBC, show extensive flooding in the Colombo and Kaduwela areas of Sri Lanka (images 1-2),

Wassana Suthi spent last week trying to keep a nursing home running as the floodwaters rose around her in the southern Thai city of Hat Yai, cutting the home off from outside help, bar one helicopter dropping supplies on the roof.

In Thailand, authorities say they have seen one of the heaviest single events of rainfall in hundreds of years, followed by more days of unrelenting downpours. Across Southeast Asia the impact of climate change is becoming an ever-more urgent political issue.

Governments and aid groups in Indonesia and Sri Lanka worked to rush aid Tuesday to hundreds of thousands stranded by deadly flooding that has killed around 1,200 people in four countries.Torrential monsoon season deluges paired with two separate tropical cyclones last week dumped heavy rain across all of Sri Lanka and parts of Indonesia's Sumatra,

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