Donald Trump just sent Nicolas Maduro a Christmas message, of a sort. And that message is not many happy returns of the day. Earlier today, the US Navy boarded a tanker carrying Venezuelan oil in international waters. Unlike the first seizure, Marc Caputo reports for Axios, this ship had no specific sanctions applied to it [see update below]. This escalates the standoff over Maduro's illegal regime and the oil revenue he desperately needs to cling to power:The U.S. military early Saturday boarded a tanker that is not under U.S. sanctions as it shipped Venezuelan oil in hopes of escaping a...