In a strong message to Pakistan, US Defence Secretary Jim Mattis has said it is time for everyone to support the efforts of the UN, Prime Minister Narendra Modi and all those who are trying to maintain peace in South Asia. Pakistan must take on a substantive role in peace talks with the Taliban if the war in neighbouring Afghanistan is to be ended, he said. Mattis was responding to a question from reporters about the letter written by President Donald Trump to Pakistan prime minister Imran Khan, seeking his support in the peace process in Afghanistan. In his letter, Trump has made it clear that Pakistan’s full support over the issue “is fundamental” to building an enduring US-Pakistan partnership. “We’re looking for every responsible nation to support peace in the sub-continent and across this war in Afghanistan that’s gone on now for 40 years,” he told reporters at the Pentagon on Monday as he welcomed Union Defence Minister Nirmala Sitharaman for talks.“It’s time for everyone to get on board, support the United Nations; support Prime Minister Modi’s, (Afghan) President (Ashraf) Ghani and all those who are trying to maintain peace and make for a better world here,” Mattis said.“We are on that track. It is diplomatically led as it should be, and we’ll do our best to protect the Afghan people,” he added.