By JULIAN E. BARNES and TYLER PAGER The CIA conducted a drone strike on a port facility in Venezuela last week, according to people briefed on the operation, a development that suggests an aggressive new phase of the Trump administration’s pressure campaign against the Maduro government has begun. The strike was on a dock where U.S. officials believe Tren de Aragua, a Venezuelan gang, was storing narcotics and potentially preparing to move the drugs onto boats, the people said. No one was on...