At the close a two-day retreat in the Vatican for the African leaders, the pope asked South Sudan's president and opposition leader to proceed with the peace agreement despite growing difficulties. Then he got down on his knees and kissed the leaders' feet one by one.
The pope usually holds a ritual washing of the feet with prisoners on Holy Thursday, but has never performed such a show of deference to political leaders.
"I express my heartfelt hope that hostilities will finally cease, that the armistice will be respected, that political and ethnic divisions will be surmounted, and that there will be a lasting peace for the common good of all those citizens who dream of beginning to build the nation," the pope said of South Sudan in his closing statement.
The South Sudanese leaders did not make any statement in response to the pope's plea for peace.
The two-day Vatican meeting was held a month before the end of the shaky peace deal's pre-transitional period. On May 12th, opposition leader Machar is expected to return to South Sudan and once again serve as Kiir's deputy.
However, the agreement, which was signed in September in Khartoum, the capital of neighbouring Sudan, has been met with delays, missed deadlines and continued fighting with key aspects still not implemented.
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