Readers respond to an editorial, “The World Must Wake Up to the Horror in Sudan.” Also: Young people and guns; “gray divorce.

In Sudan’s besieged city of El-Obeid, even the simplest routines carry the threat of sudden death for civilians, as drones reshape the country’s civil war.

There's a specific feeling that 1985 carries. It was the year Back to the Future hit theaters, the year We Are the World played on every radio, the year the Atari 2600 was still the greatest gift a ...