How to get in war with rumburg? Suzerain 2.0

So after expelling rumburg from omec and getting rumburg sanctioned by both csp and ato, the game forces itself towards the elections, isn't it is possible to trigger war before those presidential focus for next term and debates?? Getting in war with rumburg before election would surely be best as for election campaign. Strong military (in the country info for rumburg) it shows military strength equivalent after sanctions. With allies like lespia and agnolia