Uganda has deployed an unknown number of troops to South Sudan in a bid to protect the fragile government of President Salva Kiir as a tense rivalry with his deputy threatens a return to civil war in the east African nation.

Uganda has deployed special forces in South Sudan's capital Juba to "secure it", Uganda's military chief said on Tuesday, but South Sudan's information minister denied the presence of troops, as tensions between South Sudan's president and first vice president stoke fears of a return to war.

According to Uganda’s military chief Gen. Muhoozi Kainerugaba, Kampala has deployed troops to South Sudan’s capital, Juba, to help secure the city amid escalating tensions between President Salva Kiir and Vice President Riek Machar.

The situation in South Sudan is fragile and getting worse, with growing political and military instability. The claims made by the information minister do not reflect the reality on the ground.

"We shall protect the entire territory of South Sudan like it was our own," he added on the social media platform X. South Sudan's government has not yet commented on the deployment. Concern about the security situation in South Sudan has been mounting,