Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. US Warns 'Distressingly High' Afghan Violence Could Derail Deal with Taliban Ayaz Gul ISLAMABAD - The United States has warned that "distressingly" high levels of violence in Afghanistan threaten to derail Washington's peace-building deal with Taliban insurgents and the ongoing intra-Afghan peace negotiations. Zalmay Khalilzad, the U.S. special envoy to the turmoil-hit nation, issued the warning Monday as the Taliban intensified battlefield attacks against Afghan security forces, including large-scale offensives last week in the southern Helmand province. .