The formidable investigative journalist Sy Hersh exposed in 2007 the formation of the US-Israel-Saudi axis against Iran. Operating for over a decade, it has gotten a boost from the Trump administration. Hersh's article in the New Yorker magainze is important background essential to understanding the current situation and US policy.
"In the past few months, as the situation in Iraq has deteriorated, the Bush Administration, in both its public diplomacy and its covert operations, has significantly shifted its Middle East strategy. The “redirection,” as some inside the White House have called the new strategy, has brought the United States closer to an open confrontation with Iran and, in parts of the region, propelled it into a widening sectarian conflict between Shiite and Sunni Muslims.
To undermine Iran, which is predominantly Shiite, the Bush Administration has decided, in effect, to reconfigure its priorities in the Middle East. In Lebanon, the Administration has coöperated with Saudi Arabia’s government, which is Sunni, in clandestine operations that are intended to weaken Hezbollah, the Shiite organization that is backed by Iran. The U.S. has also taken part in clandestine operations aimed at Iran and its ally Syria. A by-product of these activities has been the bolstering of Sunni extremist groups that espouse a militant vision of Islam and are hostile to America and sympathetic to Al Qaeda....."