The MFO was installed to monitor the demilitarization of the Sinai under the 1979 Egyptian-Israeli peace accord.
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In recent years, Washington has been assessing to what extent the United States should participate in the MFO, especially as military coordination between Israel and Egypt has tightened to help beat back an Islamist-led insurgency in the Sinai.
According to its website, the MFO has 1,154 military personnel from the United States and 12 other countries, covering an area of more than 3,860 square miles in the Sinai. Some 452 of the personnel are American.
