EU3 DW Help

[Baltais]

Hi, i'm playing as Castille(spain), i have some problems when declaring wars. Almost every country is in alliance with another country, so when i declare war, i get like 20 countries declaring war on me, it isnt possible to defend from them. Do someone have solution what to do if, all countries have alliances with another ?
+ I get a load of warnings every time.

[Akar]

Nothing to stop them from allying. Though if you don't want to get constant warnings keep your infamy down and your prestige about 0.