Barbuda had been known for its white-sand beaches, but now, 95 percent of its structures are damaged.
Despite the destruction, most residents made it through the storm.
At a service to give thanks for the deliverance of the peoples of Antigua and Barbuda at Southwark Cathedral on Thursday evening Baroness Scotland recalled the major devastation experienced by six Commonwealth countries so far this year: Sri Lanka, India, Pakistan, Bangladesh, Sierra Leone and now Barbuda.
As reported by CNN, Sanders, who has been the USA ambassador to Antigua and Barbuda since 2015, said the damage from the storm "was complete", adding that there is not one single living person on the island. "For the first time in 300 years, there's not a single living person on the island of Barbuda - a civilisation that has existed in that island for close to, over 300 years has now been extinguished".
Hurricane Irma swept through the Leeward Islands, and swept away with it more than 300 years of civilization. This was a huge monster.
Sanders was recalling the tragic moment Hurricane Irma struck the island of Barbuda.
Barbuda and Antigua prime minister Gaston Browne implemented a mandatory evacuation order on September 8, to ensure every single resident was moved to safety.
He said: 'We are hopeful that the global community will come to our aid, not because we're begging for something we want, but because we're begging for something that is needed'. This is a disaster.
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Reconstruction efforts are going to be much costly than what the islands can afford and the clean-up alone could take anywhere between a few weeks to several months.
Robert De Niro, who was planning a luxury hotel on the island is among those who have pledged to help rebuild.
A local broadcaster in Barbuda summarized the situation thus: The island's history will now be described in two epochs. At the time it was populated with Arawak and Carib indians.
Early Spanish communities were followed by French and eventually English settlements.
Barbuda has been left completely devastated by Hurricane Irma. Hurricane Irma had destroyed a number of islands before moving on to the Florida Keys.
The island of Barbuda, part of the Antigua and Barbuda nation, is only about 15 miles long and about 6 miles wide.
"What we have to insure now is that, when we rebuild, all of the buildings on the island can withstand hurricane forces of the kind and magnitude that we've seen, because we believe climate change is here to stay".