BEIRUT — The influential speaker of Lebanon’s parliament has cast doubt on whether the reconciliation of the country’s rival Christian leaders will help the country install a new president after nearly two years with the post empty.

In a surprise move, Christian politician Samir Geagea declared his support for 80-year-old rival Michel Aoun for the presidency on Monday, edging him closer to the position.

Aoun is part of the March 8 alliance dominated by the Iranian-backed Shi’a group Hezbollah. Geagea is part of the March 14 alliance led by Sunni politician Saad al-Hariri, who is in turn backed by Saudi Arabia.

“The rivalry between the two was the toughest and hardest (in the country), hence what happened is an advanced step for the Lebanese and a positive thing on the Christian front in particular, but this step is not enough presidentially,” speaker Nabih Berri was quoted as saying in Assafir newspaper on Wednesday.

Berri, a powerful Shi’a politician, is also part of March 8 and has said he will not call parliament to elect a president unless all the main sectarian parties attend.

That means Aoun must win Sunni backing in addition to the strong Shi’a support he enjoys from Hezbollah.

Assafir newspaper said Berri would call on his own grouping, the Amal Movement, to discuss its position when “he has enough elements to take the appropriate decision.”

Lebanon’s parliament, which elects the president, has convened at least 30 times without being able to agree on a candidate.