What trillions wasted in Iraq got us

"In the meantime, American influence within Iraq is on the wane. U.S. officials believe the Iranian government is trying to fill the void, stepping up both its commercial dealings with Iraq’s government—the two countries, along with Syria, signed a $10 billion natural-gas pipeline deal earlier this week—and its covert support to the armed militias inflicting casualties on the departing U.S. troops."

The U.S invading Iraq was the best thing to happen to Iran in decades.