Lebanon's Prime Minister Saad al-Hariri has been invited to Saudi Arabia, his office said on Monday, setting the stage for his first visit since he abruptly resigned there in November.
The row has worsened a standoff between Berri, a Shia, and Aoun, a Maronite Christian, that threatens to ignite sectarian tensions in the run-up to a parliamentary election in May.
Saad al-Hariri attended independence day celebrations in Beirut on Wednesday after returning to Lebanon for the first time since resigning as prime minister in a broadcast from Saudi Arabia.
Regional tensions have risen in recent weeks between Saudi Arabia and Iran over Lebanese Prime Minister Saad al-Hariri's surprise resignation and after an escalation in Yemen's conflict.
Lebanon's Foreign Minister Gebran Bassil said on Friday a crisis triggered by the resignation of its prime minister was part of an "attempt to create chaos in the region", local television stations reported.
Lebanese President Michel Aoun said earlier this week that Hariri, who abruptly announced his resignation while in Saudi Arabia on November 4, was being held hostage by Riyadh.
President Emmanuel Macron has invited Lebanon's Saad al-Hariri and his family to France, the French presidency said in a statement.
Lebanese Foreign Minister Gebran Bassil said on Wednesday that Lebanon will continue taking steps in "a brotherly way" to resolve the issue of its prime minister, Saad al-Hariri, who resigned while in Saudi Arabia and has yet to return.
Lebanese President Michel Aoun said on Sunday that Saad al-Hariri's freedom was being restricted in Riyadh, the first time the Lebanese government has publicly declared its belief that Saudi Arabia is holding its prime minister against his will.
A country long divided by sectarian conflicts, Lebanon has found a rare point of unity since Saad al-Hariri's shock resignation as prime minister: Lebanese of all stripes want him to come back from Saudi Arabia and to continue his work as premier.