The AP Stylebook cautions against using abbreviations or acronyms that the reader would not quickly recognize, and Dragoman prefers spelling out acronyms and abbreviations on first reference.

Incorrect: The CBRT‘s latest interest rate hike, the third this year, drew a muted response from international investors.

Correct:     The Central Bank of the Republic of Turkey‘s (CBRT) latest interest rate hike, the third this year, drew a muted response from international investors.

However, if the acronym is rather common and therefore most readers will easily recognize it, you do not need to spell out.

Correct:  A top former war crimes prosecutor has quit the U.N.‘s Independent Commission of Inquiry on Syria, over what she described as the Security Council’s lack of political will to hold the perpetrators of war crimes accountable.

Correct:    The Hamel report redefine NATOs’s role in the age of détente and prevented the Vietnam war splitting apart the Western alliance.