As thousands of teens and young adults enjoyed an Ariana Grande concert in Manchester Arena, Salman Abedi, a 23-year-old detonated a bomb he had strapped to his body. That he packed the bomb with nails made his goal clear: He not only wanted to kill as many innocents as possible, but maim many times more.

The Manchester attack is terrorism, plain and simple. There is no justification nor would any self-respecting politician nor diplomat even attempt to offer one.