OMMUNICATION STRATEGIES FOLLOWED IN THE UNITED NATIONS

the broader perspective is Communication Strategies followed in the United Nations. i had prepared sort of an over view about it. My professor says that i need to zero in on a particular question while writing my dissertation.
i have boiled down to two questions
1> where does the communication Strategy which is followed in teh UN originate
2> What are teh challenges faced by the UN while implementing such strategies?
3> is there any way to evaluate the effectiveness of what they are doing? ie if at all their communication strategies is working out in they way they wish it did.

i would like my writer to suggest a valid question which can be presented in my dissertation and wud be an interesting read
also i would like a draft by next week or so and may be a time to time update of whats happening with my dissertation.