When President Trump slapped surprise oil sanctions on Venezuela aimed at toppling President Nicolás Maduro, exports plunged and banking froze as the effects hit harder and faster than expected. But in recent days it has become clear that Venezuela’s state oil company, the main target of the sanctions as Mr. Maduro’s bankroller, has found a few ways to survive, with some Russian help. If Mr. Maduro hangs on, many in Venezuela fear that the sanctions imposed last week will push the already suffering nation of about 30 million people into an even greater humanitarian catastrophe. “I’m not sure the U.S. has a Plan B if this doesn’t work in getting rid of Maduro,” said Francisco Rodríguez, a Venezuelan economist at Torino Capital, a brokerage firm. “I’m afraid that if these sanctions are implemented in their current form, we’re looking […]