The Wilson Center published in April 2020 a paper titled "Targeted Sanctions and Anti-Money Laundering Measures in Support of Peace in South Sudan" by John Prendergast, Hilary Mossburg, and Megha Swamy.
The authors suggest that sanctions are not a tool to be used alone, and no one is advocating for them to be the entire strategy; they are most effective when utilized in conjunction with diplomacy, public messaging, anti-money laundering efforts, technical assistance, asset forfeiture measures, travel restrictions, and other tools of financial and diplomatic pressure.