One more hint. you can use patrolling armies on critical points of your kingdom/ and attack enemy with armies and raiders/
And you can use some kind of counter taktiks- if your opponent attacks near provinces with moving from previously raided - you can teleport and kill raider/ (fomoria in rising sun stopped my attempts to use heliofagus and vampire sneaking raiders just by this taktiks)
And dont forget about horrors and other summonable armies(hordes from hell...)it can help you return faraway provinces/
And!
Use special armies for preventing being raided/ 3-4 can be enough with good mapmove/ in lategame to lose some provinces for some time isn't so critical
Excuse me for my english
