NEW YORK - Republican presidential candidate Donald Trump said on Tuesday he is willing to talk to North Korean leader Kim Jong Un to try to stop Pyongyang's nuclear program, proposing a major shift in US policy toward the isolated nation.In a wide-ranging interview with Reuters, Trump also called for a renegotiation of the Paris climate accord, said he disapproved of Russian President Vladimir Putin's actions in eastern Ukraine, and said he would seek to dismantle most of the US Dodd-Frank financial regulations if he is elected president.The presumptive Republican nominee declined to share details of his plans to deal with North Korea, but said he was open to talking to its leader."I would speak to him, I would have no problem speaking to him," he said.Asked whether he would try to talk some sense into the North Korean leader, Trump replied, "Absolutely."North Korea's mission to the United Nations did not immediately respond to a request for comment on Trump's remarks.Trump, 69, also said he would press China, Pyongyang's only major diplomatic and economic supporter, to help find a solution."I would put a lot of pressure on China because economically we have tremendous power over China," he said in the interview in his office on the 26th floor of Trump Tower in Manhattan. "China can solve that problem with one meeting or one phone call."Trump's preparedness to talk directly with Kim contrasts with President Barack Obama's policy of relying on senior US officials to talk to senior North Korean officials.