An Israeli defense official confirmed that the country has developed a new policy in recent years to allow Egypt to quickly beef up its forces in the volatile Sinai peninsula as part of a shared struggle against Daesh militants.

The official spoke days after Egyptian President Abdel-Fattah el-Sissi said there are about 25,000 Egyptian troops operating in Sinai. It was the first time an Egyptian leader has commented on the number of troops battling militants there.

The Egyptian President Sissi said the country faces a tough battle as it struggles "alone" against insurgents and the terror threat from a Daesh affiliate based in northern Sinai. Egyptian President Sissi warns the "price will be very heavy" in the fight to combat terrorism. His remarks came shortly after a brazen militant attack, involving a truck bomb, killed at least eight in the Sinai city of el-Arish on Monday. The U.N. Security Council condemned the attack, reiterating its position "that terrorism in all its forms and manifestations constitutes one of the most serious threats to international peace and security." The northeastern Sinai region has been a militant hotspot for several years.

His comments, made Monday night in a telephone call to a live TV talk show, underlined the depth of his commitment to the fight against militants, but also reflected the immense challenges Egypt faces. In addition to the troops, Egypt's military is also known to have deployed F-16 fighter jets as well as Apache helicopter gunships and tanks in northern Sinai. Egypt's close coordination with Israel in the fight against Daesh in Sinai is widely believed to be helping to fuel the insurgency.

Israel, which is bitter enemies with the Hamas in the neighboring Gaza Strip, sees Egypt as an important ally in the battle against the Daesh in the region and the two countries have close security and intelligence ties.

While their historic 1979 peace agreement limited the number of Egyptian forces in the border area near Israel, it includes provisions to allow Egypt to increase its forces if Israel agrees.

The Israeli defense official said that Israel used to treat such requests with caution, but that in recent years has taken on a new policy to approve requests much faster in a reflection of the growing friendship and joint interests. "We do have a new policy and that has to do with terrorism over there," he said. "It's a common threat and a common interest."

The official, speaking on condition of anonymity, was unable to provide firm numbers on Egyptian troop levels in Sinai, but said they were "significant." "There's a need on the ground that we more than acknowledge," he said.