Landlocked country one, making them the biggest contiguous group in the world. Also, the Central Asian and Caucasian clusters can be considered contiguous, joined by the landlocked Caspian Sea. Mongolia is almost part of this cluster too, being separated from Kazakhstan by only , across Russian or Chinese territory. There are the following "single" landlocked countries (each of them borders no other landlocked country): If the Caucasian countries and Kazakhstan are counted as part of Europe, then Europe has the most landlocked countries, at 20. If these transcontinental countries are included in Asia, then Africa has the most, at 16. Depending on
Cheesman's gerbil Cheesman's gerbil Cheesman's gerbil ("Gerbilus cheesmani") is a small rodent in the subfamily Gerbillinae of the family Muridae. It is distributed mainly in Arabian Peninsula to southwestern Iran. It has orange-brown fur, white underparts, large eyes and a very long tail. Cheesman's gerbil was first described by the British zoologist Oldfield Thomas in 1919. It was named in honour of its discoverer, the British military officer, explorer and ornithologist Robert Ernest Cheesman who collected it while on an exploratory expedition in Saudi Arabia. This gerbil is similar in appearance to the lesser Egyptian gerbil ("Gerbillus gerbillus") and Anderson's gerbil ("Gerbillus