The Sentry, which is affiliated with the Enough Project, published in August 2019 a report titled "Consequences for Kleptocrats: Financial Pressures to Support Peace in South Sudan" by Joshua White.
The author argues that sanctions by the US Department of Treasury's Office of Foreign Assets Control against three individuals engaged in bribery and corruption in South Sudan is an effective way to encourage peace in the country. Going after the business holdings of the individuals being sanctioned is especially important.