Egypt—Friday 26th, 2017. A handful of masked men lay in wait where the busy highway and the sandy back road leading to the Monastery of St. Samuel the Confessor intersect. Located in the Minya Governorate, 120 miles south of Cairo, the Monastery is one of Coptic Christianity’s holiest shrines. One-tenth of Egypt’s 92 million population is Christian.

Consequently, sites of worship such as this are always busy—even though tourism, a staple for the Egyptian economy, has suffered since the Arab Spring in 2011 and the fact that Minya is 120 miles south of Cairo.

The black-clad men stopped a convoy of two buses and a pickup truck. With guns in hand, they demanded that the pilgrims denounced their Christian faith. The travelers refused. Thirty were killed, including one American from Chicago, with shots in the head and another 23 injured.

ISIS has claimed responsibility for the attack. As retaliation, the Egyptian Air Force bombed targets in the Libyan city of Derna, where the terrorists are believed to have come from.

And they will continue.

“Anyone sponsoring terrorism will be punished no matter where they are,” Colonel Tamer al-Refaei, an Egyptian military spokesman, said on Monday, “we have not announced the cessation of military operations against terrorist training camps.”

But with the holy month of Ramadan—when Muslims abstain from eating and drinking during the day—in effect, and, according to our sources, no intention by the Egyptian Islamic religious authority to issue an absolution to troops doing the fighting, the military’s effectiveness is doubtful.

This attack is the latest in a string that has claimed over 100 lives since December. On 9 April, St. George’s Church in Tanta and St. Mark’s Cathedral in Alexandria were observing Palm Sunday when suicide bombers attacked. Thirty-seven people were killed and dozens injured in the deadliest strike against civilians in Egypt’s recent history.