Hi @satya_saketh, in this scenario have you tried approaching this with the use of a reference list?  

For instance, your YARA-L rule can still continue matching as it currently is, but you could add an extra condition statement that checks whether the country isn't part of an existing reference list:

condition:
     not $country in %allowed_countries

Let's say you're pulling out the country earlier in the YARA-L rule, this logic will effectively negate the match if the reference list contains the country in question.