Nabil Fahmy told the state-run Al-Ahram newspaper the extension of the period of instability in ties would "reflect negatively on the entire region, including American interests."
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"We are now in a delicate state reflecting the turmoil in the relationship and anyone who says otherwise is not speaking honestly," he said.
Egypt criticized a US decision last week to curtail military and economic aid to Cairo after a crackdown on the Muslim Brotherhood, although Washington stressed it was not severing ties with its long-standing ally.
US officials said the move reflected Washington's unhappiness with Egypt's path since the army overthrew freely-elected President Mohamed Morsi of the Muslim Brotherhood on July 3.
The army-backed interim government insisted Egypt would not bow to US pressure, saying it found the decision strange at a time when the country was "facing a war against terrorism".
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