Expresses relief in Paris, excited by drug from Belgium (6,2)

'belgium' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'expresses relief in paris excited by drug' is the wordplay.
'expresses relief in' becomes 'eb' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'excited' indicates anagramming the letters.
'by' is a charade indicator (letters next to each other).
'drug' becomes 'e' (e is another name for ecstasy).
'paris' anagrammed gives 'prais'.
'eb' after 'prais' is 'praiseb'.
'praiseb'+'e'='PRAISE BE'

'from' is the link.

Can you help me to learn more?