Since two months, I am making an essay. The subject -and main question- of this essay is:
"To what extend has the use of veto (UN) developed from 1975 to present time?"
After some digging in the Uni's library, some respected internet sites and a few encyclopaedias, I'm kind off stuck. I found a couple of books and articles which explain in detail which country used its veto-right at what time and occasion.
But I also need to know what important events took place in the last 25 years in order to answer my main question. Since there are no books in “our” library that cover that subject and time (the history is still too “recent”), I'm searching for an internet site with a (global) timeline that will give me an indication about recent occurrences. Now, of course I can probably look everything up, but I fear that it will consume an enormous amount of time and leaves me with the possibility that I'm forgetting something.
Another thing I'm looking for is an internet site which comments on books. For example, I'm using small parts of this book for my essay:
"A.V. Patil,
The UN veto in world affairs, 1946-1990 : a complete record and case histories of the Security Council's veto."
I'm wondering if I can really use this book for my essay, if the writer and presented information are credible enough, etc. So I'm looking for a site that more or less answers these questions about a book:
-How did the writer order his book?
-How does the writer present his conclusions/results?
-How does the writer justify his conclusions/results? (Did he do his own research or did he copy someone else's)
-Are there elements in the book, which the writer regards as essential or new?
As you can see, I'm not really looking for a summary (although it would be handy

), but more for info concerning the way the writer presented the information in his book, if it is credible information, etc.
So, in short, these are my two questions:
1) Does anyone know an internet site which contains a timeline of the events which took place in the last 25 years? A site with a timeline of the last 50 years is fine as well, as long as I know which important events took place in the last 25 years.

2) Does anyone know a site with information about (comments on) books?
- I thank you in advance. I actually thought it would be wise to ask this sort of questions for information now and here.
Here, because most people know how to look for info on the internet faster and better than me.
Now, because I'm quite sure that the result which I get -if I get them- will serve me well in future projects also.