Help on a mission

[Daora]

Hey there, im playing as the Byzantine Empire and am around turn 95 when I was given the mission by an Egyption Prince to kill his farther:

Time: 10 turns

Crown Prince Tantawi:

"My farther is but a simpering fool. If left to rule he will bring only ruin to what should be my empire. Kill him so that I may lead my empire to greatness, and our empires shall rule side-by-side as brothers. I willing to generiously "recompsense" you for your troubles."

Target: Sultan Moussa

Reward: You will improve your relations with this nation. You will recieve 5000 florins

Penalty: You will dissapoint this faction

My first question is whether I should take this mission at all, seeing that im not currently at war with Egypt and killing the king will only lead to future war. If yes, than how should I do it? Does one have to Assasinate the target or do I have to declare war openly and kill the King on the field of battle? I do not wish to mess up my luck thus far, The Catholic nations have not touched me yet and have appeased the Papal States to not fight on two different fronts. and I hope to keep it that way and the Mongols have ended up storming Russia and Poland rather than the Turkish lands however I am not guaranteed safety for long.

[John Doe]

For those kind of mission you must use an assassin, killing him in a battle will cancel the mission. If your assassin get caught trying to kill the king, then it'll be considered declaration of war. I don't do those kind of mission because assassination attempt on a king have a very low success rate, and I find it a waste of micromanagement time. But it's up to you, depends how far rpg you put in your games.

[Silverheart]

Since these missions improve your relations with the other faction, I prefer to take them - if I have the means. But you need experienced assasins, who are skillful enough to have a decent chance or good enough to at least avoid capture.
Usually I prefer those with guild training, some improving retinues (prototype handgun, tracking dog, fine blade etc. which improves skill whitout improving the subterfuge) and at least the rank of Adept assasin.
Also, a "decent chance" should be 50% or more. If I am capable of handling a war with them, I like to take the risk of a smaller success chance ^::^

[xash11]

If he is near and youve got a good assasin i would take it. Usually if the target is far away the mission is cancelled saying hes gone into hiding, thus a waste of time.