Neither country has publicly confirmed a Saudi request for Egyptian military assistance. But the kingdom has been seeking help from allies in recent weeks, with Britain agreeing to provide aerial refueling and France pledging troops and equipment to protect a Saudi oil export hub. President Trump rebuffed Saudi appeals last month to launch U.S. strikes against the Houthis, but the United States is providing significant military support, including intelligence and data to help with selecting [...] Egypt’s top security chiefs pledged on Sunday to support Saudi Arabia as the kingdom faces increasingly deadly attacks by the Iranian-backed Houthi militia of Yemen, raising the prospect of broader regional entanglement in the conflict.

The National Defense Council, whose chairman is President Abdel Fattah el-Sisi, said in a statement that Egypt would provide “all necessary and possible forms of support” to defend the kingdom, though it did not specify what that would entail. [...] Egyptian lawmakers were expected to vote on whether to approve military assistance at an emergency session on Sunday that Mr. el-Sisi called a day earlier, saying any Egyptian action would be defensive.