Based on my research, here is my analysis of the claim:

Reasoning:

• South Sudan is extremely resource-rich, with oil accounting for 98% of its national economic revenues, primarily located in states like Unity and Upper Nile¹
• Violence has been documented spreading to resource-rich states including Jonglei, Upper Nile, and Unity, with intercommunal violence escalating in these areas²
• The security situation in Nasir County (Upper Nile region) remains precarious, with aerial strikes causing civilian deaths and significant damage to residential areas³
• Recent reports from March 2026 describe intensified confusion, displacement, and violence in Jonglei state—an embattled region with drone strikes and armed attacks²
• Research indicates that resource conflicts have become more deadly and harder to resolve due to the growing militarisation of communal conflicts and government absence in local areas⁴
• The South Sudanese government has been described as having "weak governance" with its position looking "increasingly fragile," and violence in resource-rich Upper Nile region has been of particular concern²
• The involvement of armed civil defence groups in subnational violence reflects how resource conflicts have become militarized, with 415 violent incidents between communities reported in just five months (January-May 2020)⁴

Overall validity: 90%

1. [PDF] state fragility and human security challenges in south sudan
2. Instability in South Sudan | Global Conflict Tracker
3. South Sudan, April 2025 Monthly Forecast - Security Council Report
4. Climate, Peace and Security Fact Sheet: South Sudan | NUPI