Ok, some events for Finland:
After Russia gets claims on Belaruss and Ukraine
Russia places claims on european countries!
"Russia has placed claims on Belaruss and Ukraine. We could partialy mobilize, even if this isn't afully valid reason as they aren't our neighbours."
"Rattle sabers and fully mobilize!"
-5000 supplies
10% national dissent "Ketä v***** kiinnostaa joku Ukraina!!??"

Full mobilization
Triggers the event "Finland rattles sabers" for Russia
"Partialy mobilize"
-2500 supplies
5% national dissent; not a fully valid reason to partialy mobilize
Partial mobilization
"Let it be, this isn't a fully valid reason"
Nothing happens
For Russia:
Finland rattles sabers
"Our neighbors in Finland have started a full scale mobilization. What should we do?"
"Teach them!"
War with Finland
5% national dissent
"Let it be"
Nothing
If Russia puts claims on Baltic countries
Russia places claims on our neighbors!
"Russia has placed claims on our neighbors! We should call some of our reserves to action!"
"Be bothersome and start a full mobilization"
-5000 supplies
6% dissent
Trigger the "Finland rattles sabers" event for Russia
"Do it!"
-2500 supplies
2% dissent
Partial mobilization
"Let it be"
2% dissent
Russian civil war:
Civil war in Russia!
"A civil war has sparked in Russia! The conflict may spill over the borders! Shouldn't we call up the reserves?"
"Interfere the war!"
-5000 supplies
10% dissent
Full mobilization
Triggers the "Interfere the Russian civil war" event
"Yes, lets do it!"
-2500 supplies
Partial mobilization
"No, let it be"
4% dissent
Interfere the Russian civil war
"Which side we are going to support?"
Pick one of the sides, get a military acces to the side you picked and get in war with the other two sides.
When Russia gets in war with an European country:
Russia attacks an european country!
"Russia has attacked an european country! This is a fully valid reason for us to mobilize!"
"Do it!"
-5000 suplies
Full mobilization
"No, only partial mobilization"
-2500 supplies
4% dissent
Partial mobilization
"No let it be"
11% dissent
More later...