GENEVA, -- U.S. Ambassador Samantha Power must speak out now to stop a controversial Turkish lawyer -- the wife and employee of discredited UN official Richard Falk -- from winning a top U.N. human rights post this Thursday, said UN Watch in a letter that was also sent to ambassadors from Austria, the Czech Republic, Estonia, France, Germany, Ireland, Italy, Japan, Romania and the UK, all of whom are voting members on the 47-nation UN Human Rights Council (UNHRC), and to Canada, an observer.