An internal Pentagon email describes options available to the US to punish NATO allies it believes failed to support its military operation in Iran, including suspending Spain from the alliance and reviewing the American position regarding Britain's claim to the Falkland Islands. This was stated by a US official to Reuters news agency. Other options are detailed in a list expressing frustration with the perceived reluctance or refusal of some of America's allies to grant it access to, for example, bases or flights in their airspace under the NATO treaty.