A treaty from 2000 between the Ukraine and the United States requires the two countries to cooperate on law enforcement matters, a factor that may help to explain why President Donald Trump felt comfortable questioning the involvement of Joe Biden and his son, Hunter, in Ukrainian affairs, during a..…

These two U.S diplomats also meet with Ukrainian officials to help them sort out and understand American position, given the divergence between Giuliani's focus on advancing his client's interest and the efforts of U.S personnel to pursue and advance the national interest. ..…