Pearl Harbor:Did FDR know in advance about the attack?

Help!
I have to write an essay about Pearl Harbor and I have to prove that FDR knew about the attack in advance. The problem is, I need help writing a thesis & I have a hard time getting started. Can anyone help me' with facts to write the thesis!?

Thanks!

You need to do the research yourself, write it out, and then we can help you! Do you mean you need to know how to write a thesis statement? Here are some sites that can help you with that.

indiana.edu/~wts/pamphlets/thesis_statement.shtml#assigned
owl.english.purdue.edu/owl/resource/545/01/

Yep, and you might be starting with the thesis statement when it is not yet possible to write one.
I hope you read one article and write one paragraph about it. The, do that for just one more article. 2 articles, 2 paragraphs, and you will suddenly see the main argument you need to make.

But if you try to start by writing a thesis statement, it is the same as if you go onto the stage and try to introduce my act. You don't even know what my act is, so how can you introduce it?! Always write introductions last.