Old lady chasing old boy and a former leader (5)
I believe the answer is:
obama
'former leader' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'old lady chasing old boy and a' is the wordplay.
'old lady' becomes 'ma'.
'chasing' says to put letters next to each other.
'old boy' becomes 'ob' (abbreviation).
'and' is a charade indicator (letters next to each other).
'ob'+'a'='oba'
'ma' after 'oba' is 'OBAMA'.
Can you help me to learn more?
(Other definitions for obama that I've seen before include "President awarded the 2009 Nobel Peace Prize" , "Former president" , "US presidential candidate" , "Politician" , "Leading man" .)