Wednesday marks the 15th anniversary of detainees first arriving at the United States' Guantanamo Bay detention center in Cuba. After the recent transfer of four cleared Yemeni prisoners to Saudi Arabia, the camp still holds 55 detainees, 19 of whom have been cleared for release. Another 36 are subject to indefinite detention with no charge or trial to date, and 10 have been charged with war crimes. The Guantanamo detention center has held about 780 prisoners over the last decade and a half, and contrary to President Obama's repeated promises throughout his presidency to close the facility, it is expected to remain open when President-elect Donald Trump takes office next week.

Scroll for 5 things you
need to know now