.Trump has been quoted as saying, in respect of a meeting with the President of Colombia, talking about repressing drug making and selling, “Walls work. Just look at Israel”.

Just look at Israel indeed. It is under siege by its growing Palestinian population, and has resorted to apartheid measures to resolve its problems with underemployed Palestinian youth. The wall it is building against people in its midst is creating a degree of resentment that it seems Trump cannot imagine. Disadvantaged Palestinians are smouldering with anger and the wall is a symbol of Israeli insensitivity and Palestinian resentment. And the American president points to it as a good example. What a moron.

Ask Gazans how valuable is the wall around their enclave. Ask Israelis whether it makes them feel strong and safe. Ask Israelis who live near Gaza just how secure that wall makes them.