Of course that is not what Muhammed bin Salman (MbS) or his mouthpieces claim, but it is pretty much what every commentator I have seen outside of Saudi Arabia thinks is the likely outcome of his most recent actions, taken on the heels of his purge/arrests of over 200 people, with apparently more possibly about to be swept up in a supposed anti-corruption drive, although as Anne Applebaum put it, "In some countries a person is charges with corruption and then arrested, while in others they are arrested and then charged with corruption, with Saudi Arabia being among these latter." An unfortunate aspect of the current situation is that there are many loose ends and uncertainties, with many people in Lebanon making accusations that are being denied by Saudi authorities, but with no credible denials of the charges coming from those most affected and involved.
What KSA has done is invite the premier of Lebannon, Saad al-Hariri to visit KSA and then have him announce Riyadh his resignation from that position. While he seems to have said little of any substance in his resignation speech and has said basically nothing since then nor made any public appearances that I am aware of, Saudi authorities said that the reason for this resignation was that he was in danger of being assassinated by Hezbollah or other enemies, which had happened to his father Raif in 2005, making this suggestion/accusation have some credibility. Raif had also been premier, a position guaranteed to a Sunni as part of the Syrian government and Hezbollah, the latter a longstanding relationship.
As it is, nobody in Lebanon has accepted al-Hariri's resignation, including the members of his own party, the Forward Movement, although they have so far defended the Saudis against criticism of their actions. All the major political figures have demanded that he return to Lebanon so that he can resign there if he so wishes, including both his rivals such as Aoun and Nasrallah, the Hezbollah leader, as well as the members of his party. Those in the rival parties, although all in the coalition together, have charged the Saudis with putting al-Hariri under house arrest and forcibly preventing him from returning to Lebanon. What he actually can do or wants to do is unknown.
It is reported today in WaPo that the Saudis have forced al-Hariri to step down for not confronting Hezbollah and trying to reduce Iranian influence in Lebanon and its ruling coalition. Reportedly they are trying to convince his older brother, Bahaa, to take over as premier, but Bahaa is refusing so far. They also have urged other brothers (I do not know how many there are) who are hanging out in KSA (where their father made over a billion dollars) to return to Lebanon to support this effort and to pick a fight with Hezbollah. So far apparently none of them have responded favorably to these entreaties.
I shall only briefly note that MbS has been making a variety of seriously dumb moves. I guess we shall have to wait and see if his purge/arrests of over 200 high level Saudis will work out internally beyond simply temporarily cementing his power and wealth. However, his two foreign ventures prior to this matter have turned into complete botches, with one a full-blown disaster. That would be Yemen, where a massive cholera outbreak is happening, along with famine, both of these aggravated by the recent blockade put in place against the Houthis. MbS started a war against them two years ago, with all the noise being that they would make short work of the Houthis, but it has not come to pass, only a massive humanitarian disaster. Of course, President Obama supported this war by KSA against Yemen, if not as enthusiastically as President Trump reportedly has.
The other botch, not nearly as humanly destructive, has been the Qatar farce, with MbS leading UAE, Bahrain, and Egypt into their boycott and embargo and numerous demands against Qatar for being supposedly too friendly with Iran (who is also supposedly behind the naughty Houthis in Yemen). Needless to say, Qatar has not only completely succeeded in not falling or giving in to KSA, and indeed has become much friendlier and more openly so with Iran. So, MbS seems to have a terrible track record regarding foreign affairs, and this move towards Lebanon seems to be his stupidest move yet, more obviously a hopeless botch upfront even more than these other two, which many thought would succeed when he first got them going. This Lebanon venture is hopeless, although it could bring war in Lebanon with death and destruction, just as has happened in Yemen.
Trump has supported the war in Yemen, the purge/arrests of top Saudis, and also the move on Qatar, although his top foreign policy people have tried to undo the latter. However, so far he has had nothing to say about this Lebanon move, while SecState Tillerson has come out against it. Maybe on this one, even he is aware that MbS is messing up big time. We shall see.
Addendum, 11/13: An article in Washington Post this morning reports that Saad al-Hariri gave an hour long interview yesterday in Riyadh on his own TV station. He said he is free to move about, resigned "without being coerced," and will return to Lebanon "soon." He said his resignation will provide a "positive shock" and demands that for him to withdraw his resignation, Hezbollah must "commit to remaining neutral in regional conflicts." Reportedly Hezbollah has provided training for Houthi forces in Yemen, which may be of special concern for the Saudis. Reactions from Lebanon seem to be all over the place, although nobody in al-Hariri's party seems to be fully supporting his story, while also not specifically denying it.
A curious note is the following in the article, which I shall simply quote without comment:
"At times his eyes appeared to dart away from the interviewer, Paula Yacoubian, to a man behind a window of the studio."