Spain's Foreign Affairs Minister Josep Borrell said Trump suggested that Spain construct a border wall across the Sahara desert.

U.N. Secretary-General Ban Ki-moon says that there has been "no real progress" in negotiations to reach a political solution in the 40-year-old Western Sahara conflict.

European pollution and dust swirling in from the Sahara created a "perfect storm" of smog in Britain on Wednesday, prompting authorities to warn people to cut down on physical exercise outdoors.