Speaking in a meeting with a visiting US congressional delegation, Adly Mansour said Egypt does not see why the US is insisting on unilateral intervention in Syria without US Security Council approval and disregards international laws, Al-Ahram daily reported.
He said such an attack would jeopardize security in the region and would have negative consequences in the region.
The president has said he is determined to launch a strike against Syria but has asked for congressional support for his plan.
In Tunisia, Issam Al-Shabi, head of the Republican Party, has condemned US threats about attacking Syria, stressing that the purpose behind the possible strike is serving the interests of the Zionist regime.
Meanwhile, UN Secretary General Ban Ki-moon in a speech at the G-20 Summit in Saint Petersburg, Russia, has called for a political solution to the Syrian crisis.
Syria has been gripped by deadly unrest since 2011. According to reports, the Western powers and their regional allies -- especially Qatar, Saudi Arabia, and Turkey -- are supporting the militants operating inside Syria.
According to the United Nations, more than 100,000 people have been killed and a total of 7.8 million of others displaced due to the violence.
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