Discuss some reasons for the delay in operationalization of Indo-US nuclear deal. What is the significance of the nuclear deal?

Discuss some reasons for the delay in operationalization of Indo-US nuclear deal. What is the significance of the nuclear deal? (GS 2)

भारत-अमेरिका परमाणु समझौते के संचालन में देरी के कुछ कारणों पर चर्चा करें। इस परमाणु समझौते का क्या महत्व है?