Can anyone help me with clues on these two questions of public international law plz:

a) A new situation requires new rules.” Discuss this proposition in relation to international terrorism and the law of self-defence and with reference to the response of the USA to the 11 September 2001 attacks.


b) “The United Nations Charter is in urgent need of reform to enable the international community to respond effectively to gross human rights violations occurring within the territory of a state.”

Discuss.

please do help.