A senior US official signaled optimism on Sunday about a possible resolution of the Iranian nuclear dispute but said Washington remained concerned that Iran’s ballistic missiles threatened Gulf Arab states.

Frank Rose, US deputy assistant secretary of state for space and defense policy, said Washington was “acutely” aware of Gulf states’ anxieties about Iran and wanted to help them launch a Gulf-wide coordinated missile defense capability.

“We are optimistic that we’ll have a successful resolution of the Iran nuclear issue … but that doesn’t downgrade our concern about Iran’s other bad behaviors, specifically their support for terrorism as well as their continued development of ballistic missile capabilities,” Rose told reporters on the sidelines of a conference in Abu Dhabi on missiles and defense. […]