The most advanced aircraft carrier in the nation crossed into the Caribbean Sea on Sunday, the U.S. Navy said, marking a major buildup in the region. The arrival of the USS Gerald R. Ford marks a major moment in what the Trump administration says is a counterdrug operation but has been seen as an escalating pressure tactic against Venezuelan President Nicolás Maduro. The U.S. has asserted that Maduro is complicit with armed criminal gangs that smuggle drugs into the U.S., allegations that Maduro has rejected. And over the last two months, the U.S. military has conducted strikes against at least...