The US Saudi Strategic Alliance is modeled on the US Japan Treaty and commits US to defend the Saudi kingdom. A draft of the treaty is being negotiated. It requires a two thirds majority in US Congress. A parallel US Saudi Cooperation Agreement is also put in place by Biden and can be done by Executive Order. What motivates this at this time and why after 9/11 when most of the attackers were Saudi, and after relations with Saudi deteriorated under Obama and president Biden's questioning some Saudi actions? The two main reasons are the change Salman of Saudi is bringing to the country modernizing its internal society and and freeing it up from the religion based restrictions of an earlier period, and his focus on investment in the economic development working with India and partners in the region, a relief from the incessant wars from the period of Reagan/Bush as the US makes domestic policy benefits determine foreign policy under Biden. Unknown in most of the world and media a change of demeanor happened at the G-20 meetings in India when prime minister Modi brought Biden and Salman together on economic development plans of a development corridor linking India through Saudi andest Asia to Europe. Biden supported the effort and it showed the Saudis under Salman as leading a development plan along with Modi and other partners for development in the Middle East after frequent wars dissipating the resources of the region and of the US. since Reagan/Bush policy failures and escalation. It is this intervening period of three decades of war that led to China's gains in relation to the US, with twin strikes to the US of China's domination of supply chains, deindustrialization, and loss of manufacturing jobs for working classes in US and Europe. Coupled with this is the opportunity for Biden and Blinken to give Israel an opportunity it never enjoyed for most of its life as a free nation since 1948 to have peace with its Arab neighbors. It is even possible that the prospect of this happening without a settlement for Palestinian statehood that would leave things in Gaza and Palestine at status quo that propelled the sudden attack on Israel. Biden and Blinken want to do the Saudi deal with a new element of getting Palestinian statehood on a basis of respect for dignity of people and of economic independent country which would put to rest decades of Arab neighbor disapproval of Israel. This is both a new vision of West Asia, what we call the Middle East, and an opportunity to focus and also cope with on Asia with the rise of China, India, as the two largest economies with EU and US in the world. ...