Spain and Germany will discuss plans for a German-led, joint missile defence system at a summit in Spain on Wednesday, the German ambassador to Spain said in an interview with the Cadena SER radio station.
But the Spanish government denied that the topic was on the agenda.
"It is an issue that will certainly be discussed at the summit," Ambassador Maria Margarete Gosse said late on Tuesday, adding that there had already been "low-level" talks between the two NATO members about Spain joining the initiative.