___ Accords (1993 and 1995 pacts) (4)
'accords' is the definition.
('pact' can be a synonym of 'accord')
This is the entire clue.
(Other definitions for pacts that I've seen before include "Accords, treaties" , "Agreements" .)
(Other definitions for oslo that I've seen before include "Capital in throes of go-slow" , "Capital city, called Kristiania until 1924" , "foreign port" , "It's capital in Anglos London" , "Northern capital of Czechoslovakia?" .)