so I had army inside my city and army out side of my regions that where controled by the city.

invader comes and segies my city.

I have 5 regions connected to that city and a huge army out side of those regions.
when that invader went into siege my city the game then blocked my main army from being able to move into any of those regions that was controlled by that city.

I get not being able to get into city with army but why would not my army be able to move across my borders and attack there other armys that where moving around pillaging my stuff ?

just cause they had one unit locking down my city in siege i could not move any units into any of my regions that where attached to that city and they could breack there army apart and raid all 5 of those outpost and i could do nothing about it.

why cant an army attack anther army that is in that sieges a city when they are on out side of the walls.

that is whole point of the walls to keep them on out side so gives you main army time to get there to drive off the invaders.  - to put all regions into lock down so you cant even defend you regions from invading forces moving around in those regions just cuz couple units has city in siege mode is pretty lame and really annoying almost makes me want quit the game.