David M. Satterfield will fill in for Ambassador Anne Patterson, who is returning to Washington after being nominated assistant secretary of state for Near Eastern affairs, the department said in a statement.
Patterson has held the position in Cairo for two years.
Satterfield is taking a leave of absence as director general of the Multinational Force and Observers, a peacekeeping group in the Sinai established in 1981.
He is expected to return to MFO post later in the year.
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