Several commentators writing contemporaneously with the buildup to the invasion linked Iraq's Nov 2000 re-denomination of oil from USD to euros and the possibility of more widespread adoption of the euro as an oil pricing standard to the risk that that would place on the post-Bretton Woods use of the USD as the international reserve currency and the impact that that would have on the US economy, and theorised that one of the fundamental purposes for war in Iraq would be to force Iraq to revert to pricing its oil in USD. In the aftermath of the invasion, other commentators concurred and reiterated earlier observations about similar threats posed by (and to) Venezuela, Syria and Iran.