<br/>US-hosted Nuclear Security Summit is expected to issue a communique endorsing a global crackdown on illicit trade of nuclear material. A draft communique also calls for securing all vulnerable nuclear materials within 4 four years. The Wall<br/><br/>Street Journal reported today that the Summit, convened by US President Barack Obama, will be held in Washington on 12th and 13th of April and will see the participation of leaders of 47 countries, including India. Prime Minister Dr Manmohan Singh will represent India at the Summit. It said a draft communique reviewed by it calls for tougher criminal prosecution of traffickers, better accounting for weapons-grade nuclear materials and more international collaboration in such cases. The world leaders are expected to agree on a proposal urging countries to convert nuclear reactors powered by highly enriched fuel. Obama, who has convened this summit as part of his ambition to achieve a nuclear weapons free world, said the nuclear security summit will be an opportunity to pursue the goal of securing all vulnerable nuclear materials around the world within four years. Some of the countries participating in the two-day summit are Australia, Brazil, Canada, China, France, Germany, Indonesia, Israel, Italy, Japan, Malaysia, Mexico, Norway, Pakistan, Philippines, Poland, the Republic of Korea, Russia Saudi Arabia, Singapore, Switzerland, South Africa, Spain and the UK. The United Nations, the IAEA, and the European Union will also be represented.