Presidents of South Sudan , Sudan to meet April 3 . Juba , South Sudan ( CNN ) -- Clashes erupted Monday on the volatile border between Sudan and South Sudan in the run-up to a planned meeting between the nations ' presidents as part of a troubled peace process . Clearly the countries ' relationship is main subject of talks . Both countries blame each other for harboring rebel groups .
Presidents of South Sudan , Sudan to meet April 3 . Clearly the countries ' relationship is main subject of talks . Both countries blame each other for harboring rebel groups .