“PM leaves for U.S. where he will join Nuclear Security Summit”, the Prime Minister’s Office tweeted.”And now, there is more that we can do with respect to the next steps in that agreement”. “We don’t have any indications that it was part of a broader planning to acquire nuclear materials, and we don’t have any information that a broader plot exists”, said Laura Holgate, Special Assistant to the President and Senior Director for WMD Terrorism and Threat Reduction.President Barack Obama, hosting the fourth and last such gathering, “obviously” is “delighted that Prime Minister Modi is able to be in Washington for the Nuclear Security Summit”, Secretary of State John Kerry said before a meeting on Wednesday with National Security Advisor Ajit Doval.”We also expect that the summit would help bolster legal, institutional and enforcement measures to strengthen the security of nuclear material, radioactive sources, associated facilities and technologies”, he added. They also discussed dealing more effectively with illegal, unregulated and unreported fishing.The NSS, a biennial event initiated by Obama, will this year draw together leaders and envoys from 53 countries and four worldwide organisations, who will focus on advancing tangible improvements in nuclear security behaviour and strengthening the global nuclear security architecture. It also cites more than 260 national security commitments, of which almost three-quarters have been implemented.The summit is taking place in the wake of media reports claiming that Khalid and Ibrahim Bakraoui, two of the three identified suicide bombers in the March 22 Brussels attacks, initially targeted Belgian nuclear plants. North Korea’s continuing nuclear threat in the Korean Peninsula will be a top agenda item at the summit.Earlier on Tuesday, Mr Doval discussed counterterrorism cooperation, including against Pakistan based groups Lashkar-e-Taeba and Jaish-e-Mohammed, responsible for Mumbai and Pathankot terror attacks with US NSA Susan E Rice at the White House.”They are in the midst of sending lots of signals to the United States and world that they’re important, a great power and that they chart their own course”, she said.The summit ends Friday evening with a news conference and a communiqué with a set of action plans “designed to support the enduring institutions and initiatives that are related to nuclear security”, the White House said.