Monday’s visit to Egypt by Turkey’s prime minister, Reccep Tayyip Erdogan, will be watched like no other. It comes just three days after thousands of Egyptians stormed the Israeli embassy in Cairo. Eighty-six Israelis inside fled, and six security guards trapped inside a strong room had to be freed by Egyptian commandos, but only after intervention from the White House. What those diplomats felt was the wrath of an Egyptian people humiliated by the killing of five soldiers at the Israeli border three weeks ago. A sixth soldier died at the weekend. Mr Erdogan will bring with him the support of a regional power and Nato member whose citizens were also killed by Israeli soldiers on the Gaza flotilla last year, and who is now threatening to send warships to protect the next one. If post-revolutionary Egypt and an economically resurgent Turkey make common cause against their former common ally – and there is every indication that they will – Israel’s isolation in the region will be profound.