Margarita Robles, Spanish defense minister, said that under the agreement reached between Madrid and Washington the Afghans could stay in Spain for up to two weeks.

The main effort to house evacuees at bases in Europe thus far has been at Ramstein Air Base in Germany, where nearly 7,000 people have arrived since Friday.

"The important thing is that Spain and the United States have reached this agreement, that this agreement is in place, that it is the result of good relations, and we will see over the coming days whether it is necessary for them to come to Spain or not," Robles told journalists.

Rota Navy Base is preparing for the arrival of Afghanistan evacuees on multiple flights, base officials said Sunday.

In Ramstein Air Base (Germany), orderly rows of military cots stood in a hangar near the flight line as airmen and spouses worked late into the night Thursday in a nearby building, sorting through donations of toiletries, baby items, toys, clothes and soccer balls.

Picture: U.S. Airmen assigned to Ramstein Air Base, Germany help set up tents (Facebook)