Human Rights Watch report documents 18 cases (9 by Ukrainian forces and paramilitaries, 9 by separatists) of arbitrary detentions, enforced disappearances and torture in eastern Ukraine between 2014 and 2016. Victims suffered prolonged incommunicado detention without formal charges, torture and ill-treatment, and denial of medical care. Many detentions were linked to prisoner exchanges under Minsk II agreements (February 2015), raising concerns about hostage-taking. Both sides violated international humanitarian law and human rights standards. Documented cases include: Kostyantyn Beskorovaynyi (59, dentist) abducted November 27, 2014, tortured at SBU facilities in Kramatorsk and held for nearly 15 months before release in February 2016; Artem (pro-separatist activist) detained January 28, 2015, tortured with electric shocks and waterboarding at Azov battalion base, then transferred to SBU facilities for 11 months; Vadim (39, real estate agent) detained April 9, 2015, tortured with electric shocks, burns and broken fingers at Right Sector base, then 6 weeks at SBU. Torture methods included beatings, electric shocks, cigarette burns, threats of rape and execution. Detainees were held without access to lawyers or families, with inadequate food and medical care.