To pull out of something is a phrasal verb which means to leave or no longer be involved in something. For example, Donald Trump, the arrogant, self-centred, mentally challenged narcissist, has just announced his intention to pull The USA out of the Paris Climate Agreement. Perhaps as compensation, he is going to drastically curtail the amount of ´hot toxic air´that comes out of his mouth and ass. If you want to read what the experts say about the consequences of this decision, check out the editorial in The Conversation.