The Obama administration signaled impatience with Iran after the Tehran government ignored a Friday deadline to respond to a U.N.-brokered deal aimed at easing concerns over its nuclear program.

• 在伊朗忽略了周五之前对联合国组织的旨在缓解其核问题忧虑的协议之后，奥巴马政府对伊朗表现出了不耐心。