Campaign problems.

[Tempesta]

Caesar I faced exactly the same problem as you in a Roman campaign on VH/M neverending attacks in .8. by same three factions(all three allied against me): what I have found in all the ROman campagins I have played if you expand too slow the barbarian nations tend to gang up on you because are their surrounding the REbel cities are eventually taken! THis has occured most times times in all the roman campaigns I have played.. but .81 I have had best campagin so far! i played much more agressively(but not blitzing still using 10 stack legions and consul legions) instead of being to historitical(eg timeline) i went bit quicker- that way I already had a good encomony and Spain pretty secure by the time Barbarian nations had taken their rebel cities gaul nation has take dominace

I also aided the Arverni to balance the growth of the arveni and furthermore with the Sweboz- Its 201 and in year 260 was when I had a ceasefire. My campaign map is much better and Arerni Aedui have not even attacked me in my entire campaign(despite their size), which I found very strange its 190's now wiht Marian reform im going to wipe out the Aeduinow and Im going to wipe out the Aedui, areveni are doen for

I suggest like Kalwerk- using add_money (in console = RomeShell) or force diplomacy script and you will be fine, if you border with them every now when they are looking threating(not to late!!!!) give them tributes like 100 for 20-30 turns
this is my campaign map at 200bc

i fixed the image hope it works!