The founder and leader of SPLM for Democratic Change or SPLM-DC returned to Juba from Cairo after three years of self-imposed exile.
Lam Akol Ajawin said he was away for a long time due to many hurdles.
He argued that it was time for togetherness and consensus building to move the young nation to higher standards.
The SPLM-DC leader added that it was time to do the best for the people of South Sudan to remember the martyrs who died for a right course.
Dr Akol thanked God for his grace, blessing and guidance, making him returns safe.
He commended President Salva Kiir for his hospitality and allowing for his return.
Lam hailed citizens, SPLM-DC members, supporters and sympathizers for their support and perseverance during tough times.
Members of the party welcomed their leader, saying he was man for democracy, peace, security and development.
Minority Leader Onyoti Adigo Nyikwec told reporters that Dr Akol’s return meant maximum operation of the party to intensify government’s checks and balances as a democratic principle.
The SPLM-DC leader said the party would maximize its activities for nation building.