As many as 192 countries will participate in Expo 2020 Dubai.
In a statement, Expo 2020 spokesperson said the organisers are committed to make it "a truly international event and platform for all of humanity", adding that "all countries" were invited "without exception".
"For more than 170 years, World Expos have been apolitical events focused on furthering humanity for the common good through innovation, cultural exchange, creativity and collaboration. We are proud to continue that tradition."
Expo 2020, which runs from October 20, 2020, to April 20, 2021, is set to attract some 25 million visitors to the emirate.