Following a report that suggested the US would try to suspend Spain due to its stance on the Iran War, NATO claims that there is no provision for member nations to be suspended or ejected from the military alliance.
According to a US official cited by Reuters, an internal Pentagon memo recommended ways for the US to penalise partners it felt had not backed its effort.
Reviewing the US stance on the UK's claim to the Falklands islands in the south Atlantic, which Argentina also claims, was another recommendation in the email.
The founding treaty of the alliance "does not foresee any provision for suspension of Nato membership, or expulsion," a NATO official told the BBC.
The report has also been rejected by Spain's leader.

Pentagon Press Secretary Kingsley Wilson told the BBC that "they were not there for us" despite "everything" the United States has done for its NATO partners.

She further stated: "The War Department [defence department] will ensure that the president has credible options to ensure that our allies are no longer a paper tiger and instead do their part."Regarding any internal discussions to that effect, we have nothing more to say.