Is it possible to occupate all the countries in alliance?

[mammbett 0]

When I declare war on the country that is in the alliance I can take away in case of victory at the peace conference I can take away only the territories that belong to the country that I declared war, although in the war participated in the war and other countries whose territories during the war can be occupied, but I can not take them, at the same time when I make peace at the conference these countries including a truce is declared, it is very inconvenient when small countries are part of an alliance of two countries and can not immediately seize them. 

can i somehow take full aliance  territories not just one country?

Same to vassals

[HaSa 118]

might be possible with a mod, but for now not possible, Lukasz made it like that to reduce border gore