Fark ki Pehchaan: State Liability vs Sovereign Immunity

Mein socha tha State Liability aur Sovereign Immunity ek hi cheez hain, par jab exam ki baar aayi to samajh me aisa lag gaya ki dono mein kya fark hai exactly? Maine Contract par paper dekhkar aisa laga ki mein pehle hi jaanti thi, par jaise hi questions padhe to confusion ho gayi.

Please, experts aapke pas hai. Aap bataye ki State Liability aur Sovereign Immunity mein kya fark hai? Kya dono hi state ka defence hai ya phir koi aur cheez hai? Maine suna hai ki State Liability mein state ka defence nahi karta, par sovereign immunity mein state ka defence karta hai. Lekin kya yah sahi hai? Kuch samajh ke dijiye, please!