WASHINGTON, April 11-- A plea for nuclear disarmament from Kazakhstan is plastered at bus stands in the U.S capital which will host the Nuclear Security Summit. Malaysian Prime Minister Datuk Seri Najib Tun Razak was among 47 global leaders invited for the two-day summit to seek a global mandate to prevent nuclear materials from falling into the hands of terrorists on Monday and Tuesday by President Barack Obama.--fotoBERNAMA COPYRIGHT RESERVED