On Monday, Egypt’s parliament authorized the deployment of troops outside the country after the Egyptian president threatened military action against Turkish-backed forces in neighboring Libya. This move is likely to destabilize the oil-rich but war-torn Libya even further.

The parliament unanimously approved “the deployment of members of the Egyptian armed forces on combat missions outside Egypt’s borders to defend Egyptian national security… against criminal armed militias and foreign terrorist elements,” according to a statement. 

Egypt’s House of Representatives, where Sisi has very strong support, approved the president’s deployment threat during a closed-door session where representatives lamented about their border region shared with Libya.

Egypt’s state-run Al-Ahram news agency reported on Sunday that the parliament’s vote was needed for President Abdel-Fattah el-Sissi to “intervene militarily in Libya to help defend the western neighbor against Turkish aggression.”

The move could bring Egypt and Turkey, which support rival sides in Libya’s chaotic proxy war, into direct confrontation. If that happens, the United States would be placed in the middle as it has been close allies with both sides.

President el-Sissi has called the strategic coastal city of Sirte a “red line.” He warned that any attack on the city, which sits near Libya’s main oil-export terminals and fields, would prompt Egypt to intervene to protect its western border. 

“Egypt will spare no efforts to support the sister Libya… to overcome the current critical crisis,” the Egyptian president said in a statement on Sunday.

Egypt does not have a lot of experience operating beyond its borders. It is also facing increasing Islamist extremism in the Sinai. A move of this magnitude would severely hamper their logistical and operational limits. Turkish drones could severely interfere with Egypt’s long supply lines and Egyptian air force would be hampered as well.