NICOSIA, Cyprus (AP) — The European Union’s executive arm will monitor any agreement to set up so-called return hubs in non-EU countries so that the rights of rejected asylum seekers sent there are protected, the bloc’s migration commissioner said Friday. Magnus Brunner said any such deal will also be vetted by the International Organization for Migration and the U.N. refugee agency to ensure compliance with those legal safeguards. “Human rights standards and international law is non-negotiable,