Iraqi Special Forces soldiers celebrate after reaching the bank of the Tigris river as their fight against Islamic State militants continues in parts of the Old City of Mosul, Iraq, Sunday, July 9, 2017. Iraqi Special Forces soldiers celebrate after reaching the bank of the Tigris river as their fight against Islamic State militants continues in parts of the Old City of Mosul, Iraq, Sunday, July 9, 2017. In this Thursday, July 6, 2017 photo, Sumaya Farooqi, 14, left, practices robotics with her colleagues, at the Better Idea Organization center, in Herat, Afghanistan. Six female students from war-torn Afghanistan who had hoped to participate in an international robotics competition July 16-18 in Washington D.C will have to watch via video link after the U.S. denied them visas -- not once, but twice. Of 162 teams participating, the Afghan girls are the only nation's team to be denied visas.