Welcome his intriguing yarns about leaders (4)
I believe the answer is:
hiya
'welcome' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'his intriguing yarns about leaders' is the wordplay.
'leaders' suggests taking the first letters.
The first letters of 'his intriguing yarns about' is 'HIYA'.
Can you help me to learn more?
(Other definitions for hiya that I've seen before include "modern form of salve?" , "Informal 19 across" , "Informal greeting" , "Hello!" .)