Former US President Donald Trump threw his weight behind Spain’s far-right party Vox, in a video shown at a rally in Madrid that also featured messages by the leading stars of Europe’s populist right. In a recording that lasted under 40 seconds made while Trump was on a plane, he thanked Spain’s far-right Vox party and its leader Santiago Abascal for what he called the “great job” they do. “We have to make sure that we protect our borders and do lots of very good conservative things,” Trump said. “Spain is a great country and we want to keep it a great country. So congratulations to Vox for so…