A senior U.S. official said Washington is confident a detained American pastor in Turkey will be free soon, as tensions deepen between the two countries. “On Pastor Brunson, I think there is excellent prospects that he’s going to come home,” Sam Brownback, U.S. ambassador at large for international religious freedom, said Thursday at the conclusion of three days of State Department talks to advance religious freedom. Andrew Brunson, an evangelical pastor from Black Mountain, North Carolina, has been jailed in Turkey for nearly two years on terrorism and espionage charges. Earlier this week, Brunson was released from a Turkish prison and placed under house arrest while his trial continues. His case has strained relations between Turkey and the United States, both NATO allies. Threatening sanctions Thursday, U.S. President Donald Trump and Vice President Mike Pence threatened sanctions on Turkey if Brunson is not released. The warning prompted a sharp response …