Cuba oil crisis: What is Donald Trump's endgame?

Russia and Cuba on Wednesday slammed the US energy blockade of the Caribbean island in a show of solidarity in Moscow, where Havana's foreign minister was due to meet with President Vladimir Putin. US President Donald Trump cut off key supplies of Venezuelan oil to Cuba after ousting Venezuela's Nicolas Maduro. He has also threatened sanctions on countries that sell oil to Cuba. But what is the US president’s ultimate goal in Cuba? And if it is regime change, does he have the tools to do it? Robert Huish...