DAPHNE PSALEDAKIS THE United States on Friday paved the way for further sanctions to be imposed on parties to the conflict in northern Ethiopia, where thousands have been killed and millions are in need of humanitarian assistance. A new executive order allows Washington to take punitive action against those in the Ethiopian and Eritrean governments, the Tigray People's Liberation Front (TPLF) and the Amhara regional government if they continue to pursue military conflict over negotiations, senior U.S. administration officials said. The move, which increases pressure on the parties to come to the negotiating table and bring an end to the…