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The correct answer is option 2: 1 and 2 only.
According to the question, the nations that were recently suspended by UNESCO for not paying their dues are being asked. Upon evaluating the given options, options 3 and 4 can be eliminated as they do not include the nations that were suspended.
Option 1 states that all nations, 1, 2, 3, and 4, were suspended. However, this is incorrect as only two nations were suspended, not all four.
Option 2 states that only nations 1 and 2 were suspended, which is the correct answer.
Therefore, option 3 is incorrect as it does not include all the suspended nations, and option 4 is also incorrect as it includes a nation (Iraq) that was not suspended.
In conclusion, the correct answer is option 2: 1 and 2 only.