Believer taking risks regularly in order to bring peace? (4)
I believe the answer is:
sikh
'believer' is the definition.
(believer in Sikhism)
'risks regularly in order to bring peace?' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'in' means one lot of letters goes inside another.
'order to bring peace?' becomes 'sh' ('sh!' is a request for silence).
The alternating letters of 'risks' are 'ik'.
'ik' put into 'sh' is 'SIKH'.
'taking' is the link.
(Other definitions for sikh that I've seen before include "Follower of gurus" , "Guru's disciple" , "Member of Indian religious sect, wears turban" , "Member of Indian religious group, wears turban" , "Religious Punjabi" .)