The package proposed by the Department of Defense this week includes 18 Lockheed Martin F-16 strike jets, Raytheon AIM-9 Sidewinder air-to-air, heat-seeking missiles for dogfighting, laser-guided bombs and reconnaissance equipment.
The Pentagon said the sale would make Baghdad "a more valuable partner in an important area of the world as well as supporting Iraq's legitimate needs" regarding self-defense.
This comes hard on the heels of the unveiling of plans by U.S. President Barack Obama's administration to provide Saudi Arabia with 84 advanced Boeing F-15SA aircraft, some 200 helicopters, including Boeing's state-of-the-art AH-64 Apache gunships, and other systems worth at least $60.5 billion.
Clearly building up Iraq's military capabilities falls within U.S. efforts to isolate and contain an expansionist Iran, which in the space of two decades has been transformed from a regional irritant to military power alleged to be on the cusp of producing nuclear weapons.
But this outpouring of weaponry for Arab states, whose relations with the United States are less cozy than they were a decade ago, is meeting criticism in Washington.
And arming Iraq, which under the late Saddam Hussein twice invaded its neighbors and was seen as the bully on the block, has caused some murmurs in the Gulf Arab states themselves.
Providing post-Saddam Iraq with 18 F-16s doesn't by any means transform it into a military power but Baghdad eventually wants 96 of them and arming them with Sidewinder missiles, which are designed to shoot down other aircraft, clearly is a move toward giving Iraq offensive capabilities rather than simply countering insurgencies.
The Financial Times reports that the watchdog U.S. Government Accountability Office questioned in a recent report seen by the London business daily whether these big-ticket arms sales, among the largest ever proposed by a U.S. administration, are in the national interest.
The report expresses concern that "U.S. priorities are not consistently considered before such sales are authorized."
Since Congress has yet to approve these arms sales, the Financial Times said "the GAO report is likely to raise questions over future sales plans."
In an audit of 15 authorized commercial weapons sales and 13 foreign military sales to six gulf countries, worth around $22 billion, in 2005-09, the GAO said the State Department "did not document how it applied criteria to review arms transfers."
The report noted, "As arms transfer authorizations increase to this part of the world, the U.S. government needs to ensure than it reviews requests for arms transfers, especially for significant military equipment, for their foreign policy and national security implications."
It remains to be seen whether these huge arms sales will help curb Iran or simply antagonize it into pursuing its alleged objective of developing nuclear weapons and the ballistic missiles to carry them to threaten regional states, such as Saudi Arabia and Israel.
The U.S. efforts to rearm Iraq's new military forces are intended to ensure that the post-Saddam state remains within the U.S. sphere of influence rather than becoming an Iranian satellite.
But the Iranians appear to be currently stepping up their campaign to install a Shiite-dominated government that leans toward Tehran. This involved covert political action as well as paramilitary operations.
As the U.S. military drawdown proceeds, with all U.S. forces scheduled to be out of Iraq by the end of 2011, the Americans continue their transfer of weapons even as the country struggles to form a coalition government six months after a stalemated parliamentary election.
On Sunday, the Iraqi navy inaugurated its first U.S.-built Swift Class patrol boat at Umm Qasr, Iraq's main port at the northern end of the gulf.
Iraq is to take delivery of 14 more of these $20 million, 50-foot craft before U.S. forces depart. The high-speed vessels' main mission will be to protect the oil terminals at al-Basra and Khor al-Amiya through which some 1.7 million barrels a day are loaded into tankers for export.
Two U.S.-built offshore support vessels, each costing $70 million, are expected to be delivered in 2011.