English parliamentarian in international storm (7)
I believe the answer is:
tempest
'storm' is the definition.
(tempest is a kind of storm)
'english parliamentarian in international' is the wordplay.
'english' becomes 'e' (abbreviation).
'parliamentarian' becomes 'mp'.
'in' means one lot of letters goes inside another.
'international' becomes 'test' (I've seen this before).
'e'+'mp'='emp'
'emp' inserted inside 'test' is 'TEMPEST'.
(Other definitions for tempest that I've seen before include "Play (with rough weather)" , "tosser!" , "Violent wind storm" , "Shakesperian storm" , "A great storm of wind and rain" .)