3 billion dollars is a lot of money, of course UK has tons of money, but there leaders get paid on a salary, and a piece of the 3 billion can change there lives forever, it's not only them that's drooling after this pie, it's kenya, and Ethiopia too, not to forget some sellout Somalis.
ignore that idiot his status is enough to tell you were he stands, the 2.8 billion is only the first phase, it's not the final figure at all, a lot of the funds has been put up by the Asian countries (Japan the most), the idea came from them and the conference was held in Korea.
Their interest is to see stability in the whole of Africa so they can come in and trade, security is the greatest obstacle for them to achieve this, the Western countries mostly Anglo American don't want to see this as they can't compete with them, hence the sabotage.
There is far greater goals at play here as brother
@Rorschach pointed out, the East/West battle, the West is in decline and have become parasites that just trade in useless derivatives with no hard assets or production capacity, they simply cannot compete with the Asian's, hence their saboteur.
It's a win/win, they keep the Asian's off Africa and hence from competing with them while they take the spoils as well (new deal money) to enrich themselves further. That's their plan, and you don't need to be smart to understand this at all.