Hostages represent not just hostages but also neighbors, people living in villages close to other nations etc.
Hope now represents the IMF. Each player owes the IMF 1000 coins. Hope can refinance or collect on your loan. She can also loan up to 10000 coins.
Combat actions now include
Reprisal Massacres
http://www.crimesofwar.org/a-z-guide/reprisal-killings/
Mass rape
http://scholarship.law.duke.edu/cgi/viewcontent.cgi?article=1016&context=lcp
Forced Recruiting
Deportation
https://www.icrc.org/applic/ihl/ihl.nsf/Article.xsp?action=openDocument&documentId=77068F12B8857C4DC12563CD0051BDB0
Ethnic Cleansing
https://treaties.un.org/Pages/showDetails.aspx?objid=0800000280027fac
Torture http://www.hrweb.org/legal/cat.html
Human shields
https://web.archive.org/web/20150717071923/https://www.icrc.org/customary-ihl/eng/docs/v1_cha_chapter32_rule97
Abduction and Adoption of the Kidnapped
http://www.ohchr.org/EN/ProfessionalInterest/Pages/CRC.aspx
Child soldiers
Article 38, CRC. Article 8(2)(b)(xxvi) of the Rome Statute of the International Criminal Court
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2318403
Please read these materials I will give a lecture on them.