The article reviews current literature on LRTAP implementation and eff
ectiveness, and suggests ten main 'acid answers' and lessons based on
the literature so far: first, LRTAP is a high-compliance regime; secon
d, important causal factors for compliance levels are found outside th
e sphere of 'environmental politics'; third,'national interests' based
on cost/benefit calculations can roughly predict levels of compliance
; fourth, especially in the NOx, context, domestic political factors m
ust also be included in order to understand compliance levels; fifth,
although LRTAP has had important arena functions, much of the reductio
ns would have taken place anyway; sixth, the transboundary acidificati
on problems have been reduced, but the transboundary 'solution' and ge
tting below 'critical loads' in both the rural and urban environment i
s a venture extending well into the next century; seventh, LRTAP's sci
entific-political complex has been very valuable; eighth, provision of
information has been the important LRTAP mechanism; ninth, research h
as so far been mainly complementary; tenth, improving knowledge of the
regime domestic interplay, including institutional access and partici
pation issues as well as the EC-LRTAP interplay, is amongst the main c
hallenges for further research, (C) 1997 Elsevier Science Ltd, All rig
hts reserved.