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With a strong cyclone approaching Bangladesh on Saturday, authorities used more than 50,000 volunteers and officials to evacuate hundreds of thousands of people from across the low-lying delta nation's vast coastal region.

Hong Kong protesters held a vigil for "martyrs" on Saturday and many demanded "revenge" after a student died in hospital this week following a high fall, fuelling anger among pro-democracy demonstrators who first took to the streets in June.

One year out from the vote that will determine whether Donald Trump earns a second term in the White House, the campaign south of the border is about to get much more frantic. Here's what you need to know to make sense of what's happening amid all the twists, turns and noise.