How to kill a Juggernaut?

[tempuraki]

2. I make him declare war on me by messing up our relation and than try to massacre his invading armies with advanced weaponry like tanks and bombers.

you don't need to make him declare war on you to do this, you can declare war yourself, sit back, and wait for them to come to you. Might not work in this game because Joao II is fighting somewhere else also, but this is the best way to weaken a powerful AI when you have tanks and the AI doesn't.

 

[DMW]

If you would have read the update you would have probably known Im already as good as dead