Given the fact that Saudi Arabia is an US' puppet regime, they(the US) could do everything they want with it. If you go to Saudi Arabia you will see that Arabi

Given the fact that Saudi Arabia is an US' puppet regime, they(the US) could do everything they want with it. If you go to Saudi Arabia you will see that Arabia is made of hundreds of different loosely integrated ethnic groups, Saudis are just one of them that took the power in the country. Removing the Saudis from power is extremely simple, they can just support other ethnic groups. The problem is that you never know if what is created is much worse than what it is there today, just like what happened in Egypt choosing the Muslim Brotherhood or in Libya, unstabilizing all the north of Africa. China is a totally different thing. China is a gigantic country, almost a continent with more than 1200 million people, a big army,powerful industry, natural defenses and ethnically dominated by Han people.