Afganistan.
Nepal
Nepal
Nepal
18th ASEAN summit will be hosted by Indonesia.
The Copenhagen Summit was from December 7th to December 18th, 2009.
The 18th biggest country is Iran
If by size you mean total area, it would be Iran. The 18th largest country by population is Turkey, not exactly in the middle east.
Peru.
18th
The 18th Century is from 1700 to 1799.
Italy
Tonga