Gosh....did the Thai's actually know where the Crimea ....or the rest of Ukraine was?
Hate to say it, but the longer this war goes the more it favors Russia--
Depends on his skill set--- I guess the Chinese bashing is taking a rest for the Russian bashing--- I grew up in the 50s UK...we were bashing you then......."how many more are going to come over here now".
Imigration--They do not look at your ticket-- If anyone-its the airlines that usually say no, just in case you are refused entry - but if you have already been granted a visa, there shouldn't be any problem entering.