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Relations between  Cambodia  and Thailand have been difficult since June 2008 amid an ongoing border conflict but have plunged further since  Hun Sen  made his first invitation to Thaksin earlier this week .
 countries of residence: Cambodia, Hun Sen
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
 Entity Pairs:  Cambodia, Hun Sen 
Answer:
 countries of residence: Cambodia, Hun Sen