Human Rights Watch sent a letter yesterday to NATO Secretary General Javier Solana expressing concern at the mounting civilian casualties in NATO’s war against Yugoslavia. In particular, Human Rights Watch raised serious concerns about whether NATO is targeting civilians or objects that, if attacked, would cause disproportionate harm to civilians. It also questioned whether, even in attacking legitimate military targets, NATO is taking all feasible precautions to avoid harm to civilians. Among recent incidents giving rise to these concerns are the destruction of factories and other property belonging to political supporters of Yugoslav President Slobodan Milosevic, attacks on Yugoslavia’s electrical transformers and the destruction of several of Yugoslavia’s television and radio stations, as well as the May 7 bombing of the civilian hospital in Nis and the Chinese Embassy in Belgrade.