No surprise there

Parallel to their power-reasserting crackdown at home, the Saudis have also tried to destabilize Lebanon as well:

Hariri’s resignation last-ditch Saudi attempt to destabilize Lebanon: Analyst
“What we see now is that you have an irrational party - I mean the Saudis - who have been trying all the irrational things that come to your mind and now they are trying one last-ditch attempt because they have already tried everything. Lebanon has seen the explosions by terrorists, suicide bombers and everything and instability at the political level with delaying of the formation of Hariri’s government and all the pressures made in order to destabilize this country came from Saudi Arabia but all have failed,” Mohammad Obeid told PressTV in an interview on Saturday.

The Saudi's endgame is pretty obvious...