) is a codification of beliefs or a body of teachings or instructions, taught principles or positions, as the essence of teachings in a given branch of knowledge or belief system. Often doctrine specifically suggests a body of religious principles as it is promulgated by a church, but not necessarily; doctrine is also used to refer to a principle of law, in the common law traditions, established through a history of past decisions, such as the doctrine of self-defense, or the principle of fair use, or the more narrowly applicable first-sale doctrine.

In some organizations, doctrine is simply defined as "that which is taught", in other words the basis for institutional teaching of its personnel internal ways of doing business.

Doctrines can grow into a branch of law; restitution is now considered a branch of law separate to contract and tort.

Some military doctrines are transmitted through training programs.

More recently, in modern peacekeeping operations, which involve both civilian and military operations, more comprehensive (not just military) doctrines are now emerging such as the 2008 United Nations peacekeeping operations' "Capstone Doctrine" which speaks to integrated civilian and military operations.

As a young Asian woman, I am no stranger to feeling fetishized by white males.

During the year and a half I was on Tinder, white males of or around my age sent me messages such as “you’re my first Asian”, “Asa Akira”, “you look like an Asian goddess”, and best of all, “don’t Asian girls love white guys?

I love him for who he is, not for the colour of his skin. if you liked this post, you might like this post on awkward phases I had as a Toronto kid.

And I definitely don’t see him as a white guy – I just see him as my guy.

For example, the doctrine of frustration of purpose now has many tests and rules applicable with regards to each other and can be contained within a "bubble" of frustration.

In a court session a defendant may refer to the doctrine of justification.

We once overheard a comment from a stranger saying “where do I get myself a hot Asian girl?