A question on game mechanics.

I'm playing the English and have been suffering an endless stream of Milanese armies and agents, as seems to be the rule.

- I have only attacked Milanese armies on my territory. The overwhelming majority of these attacks have been to lift sieges off my settlements.
- I have never sent an army on Milanese held territory.
- My standing with the pope is 7.
- Milan's standing with the pope is 4.
- I voted for the current pope.
- Milan voted against the current pope.
- I'm not at war with any other Catholic factions and haven't been for a very long time.

On my last turn I destroyed a Milanese army that was just outside my city of Bruges. The army had been on my territory heading for Bruges, with a bigger Milanese army following behind it. Immediately after I finish my turn, the larger Milanese army reaches Bruges and besieges it. On the same turn the pope sends me a Cease and Desist warning, ordering me not to attack Milan for 7 turns. Bruges can only hold out for 6 turns.

The questions:
Are the pope's orders sent to both warring parties?
Is Milan likely to lift the siege next turn if I don't attack them immediately?
Will my sallying out to lift the siege count as a violation of the papal order?