Ask AI: what if suddenly the Saudi Arabia out of no where besieged Washington DC and successfully taken it?

If Saudi Arabia suddenly besieged Washington DC and took it, the United States government would likely react with full force, launching a full military and diplomatic response. The international community would likely be outraged and condemn the action. The United States would likely call for the immediate restoration of Washington DC and work with other countries to pressure Saudi Arabia to comply. Additionally, the U.S. would almost certainly impose sanctions on Saudi Arabia and take other economic measures to put pressure on the Saudi regime.