Lebanons newly appointed President Michel Aoun has asked Saad Hariri to form a government as the countrys new prime minister.
Hariri was endorsed by 110 members of the 127-seat parliament on 3 November, with only Hezbollah, the Syrian Social National Party and the Lebanese Baath party all supporters of Syrias government declining to back him as premier.
Hariris appointment was prompted by his endorsement of Aoun for president, which ended Lebanons two-and-a-half year period without a prime minister.
Aoun became Lebanons new president following a parliamentary vote on 31 October. Lebanon had been without a president since Michel Suleimans term ended in May 2014.
The move is seen as a major blow for Saudi influence in Lebanon, following years of political and economic support from the kingdom for Hariri and his party.
Riyadh has been a historic supporter of Saad Hariri, following strong relations with his father and former prime minister Rafiq Hariri in a post-civil war Lebanon.