At least two oil tankers have made their way to Venezuela in recent days and others are navigating towards the country, a sign of ‍state-run oil and natural gas company PDVSA’s effort to expand floating storage and keep selling crude even as a US blockade has reduced exports to a minimum. US President Donald Trump this month announced a blockade of all sanctioned vessels going in or out of Venezuelan waters as part of a strategy to pressure Venezuelan President Nicolas Maduro. The US move has...