The latest on the Israel-Hamas war

Egypt is increasing its security presence at its border with the Gaza Strip, wary of a spillover of Israel’s war on Hamas onto its territory should the Israeli military begin its ground assault on the enclave’s southernmost city, Rafah, where more than half of Gaza’s population is sheltering.

The fortification by the border is a “precautionary” measure ahead of an expected Israeli ground operation in Rafah, Egyptian security officials told CNN. As part of its security buildup, the officials said, Egypt has deployed more troops and machinery in North Sinai, bordering Gaza.

Decades-old ties at risk?: Egypt was the first Arab nation to recognize Israel in 1979. The two signed a landmark pact that saw Israel return the Sinai Peninsula it captured from Egypt in the 1967 war in exchange for peace. The treaty also limited the number of troops stationed on the border between Egypt and Gaza, which at the time was controlled by Israel. The treaty turned Egypt into a pariah in the Arab world, but decades later helped pave the way for other Arab nations to sign similar agreements with Israel.

Western media outlets, including the Associated Press and The New York Times, have reported that Egypt has threatened to void the peace treaty if Israeli troops invaded Rafah. Egypt’s foreign minister dismissed those reports, but said in a news conference Monday that Cairo would adhere to the treaty “as long as it remains reciprocal,” the state-run Ahram newspaper reported.

An Israeli official acknowledged that the Egyptians have been concerned with Israel’s operation, but said they are not aware of a specific threat about the treaty.

Read more about Egypt and Israel’s relationship.