The International Red Cross estimates that about 4.2 million people were affected by the back-to-back Category 4 hurricanes in November in Honduras, Nicaragua and Guatemala.
Along with heavy winds and rain, Iota will raise sea levels by as much as 6 metres above normal tides. It is expected to quickly weaken inland, but will dump as much as 76 cm of rain over the next few days.
Iota expected to bring potentially catastrophic winds, life-threatening storm surge, and extreme rainfall impacts to central American countries.
Eta left a trail of destruction through Honduras and Guatemala, eventually weakening to a tropical storm after making landfall in Nicaragua.
Families waded through the flooded streets of the northern Honduran city of San Pedro Sula, while cars sat almost submerged in parts of the central Guatemalan city of San Pedro Carcha, television footage and images posted on social media showed.
The Nicaraguan government reports no immediate fatalities, but authorities in Honduras say a child died in a collapsed house, as Eta unleashes fierce winds, tearing up trees and ripping roofs off homes.
The clutch of nuclear-armed states, including the United States, Britain, France, China, and Russia, have not signed the treaty.
Guatemala's police say 2,065 migrants were "returned" to Honduras between Thursday and Saturday, appearing to disperse much of migrant caravan headed for US.
A stronger relationship between the two will trigger another headache for the US, but this time in its own hemisphere.
The social media platform removed thousands of government-linked accounts that it claims were violating its policies by undermining the public conversation.
Heavily armed Hezbollah, a militant Shia group, has also been designated a terrorist organisation by the US government.
Authorities in Guatemala say 1,350 Hondurans have submitted documentation to pass through the country, in bid to join hundreds of others heading for US.
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