With reference to his address to the nation on 16 July 2021, wherein he characterised the unrest in KwaZulu-Natal and Gauteng from 9 to 18 July as a popular insurrection, (a) on what ground(s) did he rely to classify the unrest as a popular insurrection and (b)(i) what are the details of the evidence that informed his decision to classify the unrest as a popular insurrection and (ii) which persons and/or entities supplied the specified evidence?