The popular explanation for those spending patterns at the time revolved around the waxingandwaning of security threats, but Ronald Epstein of Merrill Lynch Bank of America has a different take.
Contrary to the Arabists' impassioned claims, the waxingandwaning of America's relations with Arab states over the years has borne little to no relation to the state of America's relations with Israel.
Unfortunately, his mnemonic would only work in the northern hemisphere, where the moon is observed in the southern sky with the right side of the moon sunward during the waxing phase and the left side sunward during the waning phase.