Tibet is closer to the Tajikistan and not the other mentioned countries.
Uzbekistan
The proper noun is spelled Uzbekistan (country in west central Asia).
The top ten oil producers are Saudi Arabia, Iran, Iraq, Kuwait, Algeria, Nigeria, Uzbekstan, Russia, Brunei and the U.S.A.
stan is a persian word means place/land.It is used after many asian countries same as the word land is used in England. That means it depicts the country to be land of an ethnic group, like uzbekstan means land of uzbek nations.
Asia is too large and diverse. Siberia itself is larger than any other country globally ocupying the whole of North Asia. A proper way is to divide into 6 regions. 1. North Asia: -Siberia (Russia) - Moscow (in Europe) 2. Central Asia :1) Kyrghyzstan - Bishkek :2) Tajikstan - Dushambe :3) Uzbekstan - Tashkent :4) Turkmenstan - Ashkabad :5) Kazakhstan - Alma ata 3. East Asia :1) Japan - Tokyo :2) North Korea - Pyongyang :3) South Korea - Seoul :4) China - Beijing :5) Taiwan - Taipeh 4. Soth East Asia: :1) Vietnam - Hanoi :2) Laos - Vientiane :3) Combodia - Pnompenh :4) Thailand - Bangkok :5) Myanmar(Burma) - Yangon (Rangoon) :6) Malaysia - Kuala lumpur :7) Indonesia - Jakarta :8) Brunei - Bandar Sert Begawan :9) East Timor - Dili :10)Philippines - Manila :11)Singapore 5. South Asia: :1) Bangladesh - Dhaca :2) Bhutan - Paro :3) Nepal - Kathmandu :4) India _ New delhi :5) Pakistan - Islambad :6) Sri Lanke - Colombo :7) Maldives - Male :9) Afganistan - Kabul 6. West Asia :1) Iran - Teharan :2) Iraq - Baghdad :3) Kuwait - Kuwait :4) Syria - damascus :5) Turkey - Ankara :6) Azerbaijan - Baku :7) Armenia - Yerevan :8) Jordan - Amman :9) Israel - Tel aviv :10)Lebanon - Beirut :11) Saudi Arabia - Riyadh :12) Bahrein - Manama :13) Qatar - Doha :14) UAE - Dubai :15) Oman - Muscut :16) Yemen - Aden (Georgia for cultural reasons can be considered a part of Europe).