The UK Parliament published a trove of top-secret Facebook executive emails on Wednesday.

The hundreds of pages of documents provide an unprecedented window into Facebook leadership's approach to competition and growth.

Read the key takeaways from the documents below.

Britain's Parliament has just given the world an unprecedented look at the ruthless tactics of Facebook's executive team.

On Wednesday, the Digital, Culture, Media and Sport Committee published leaked emails from the Silicon Valley tech giant's leadership team that had been obtained by Six4Three, an app developer that's locked in a legal battle with Facebook after it blocked its bikini photo app.

There are hundreds of pages of documents and emails, mostly dating from between 2012 and 2015, that detail the way Facebook allowed third-party apps to access friend data through its platform.

They provide a unique window into how Facebook's senior leaders privately discussed strategy and competition at a period of intense growth for the company, which has since been bogged down by numerous scandals and flatlining user numbers in key markets.

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From Facebook's attempts to kneecap "strategic competitors" to CEO Mark Zuckerberg writing that his company's interests don't always match up with what's best for the world, here are some of the key takeaways from the documents.