SINGAPORE — Singapore Prime Minister Lee Hsien Loong said on Saturday that this year would be the last chance for the ambitious Trans-Pacific Partnership (TPP) negotiations to be concluded. “If we don’t fulfill our promise this year, it will be running into the American presidential elections in two years’ time. I think there’s…further delays of an indefinite nature,” the prime minister told business leaders, government officials and diplomats at the Singapore Summit. He said that the countries will have a lot to lose given that it is an ambitious pact that brings together the…