City in Thailand and city in Russia (5)
I believe the answer is:
tomsk
'city in russia' is the definition.
'city in thailand' is the wordplay.
I cannot really understand how this works, but
'city' could be 'omsk' (Omsk is an example) and 'omsk' is found within the answer.
'thailand' could be 't' (abbreviation on car registration plates) and 't' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'and' acts as a link.
Can you help me to learn more?
(Other definitions for tomsk that I've seen before include "Industrial city of southern Siberia - one of the Wombles" , "Siberian city; one of the Wombles" , "Russian town" .)