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 U.S. policy toward the isolated nation.<br />The presumptive GOP nominee made the comments in an interview with Reuters on Tuesday, the news service reported.<br />Trump said he would talk to Kim to try to stop the country's nuclear program.<br />"I would speak to him, I would have no problem speaking to him," Trump said.<br />"At the same time I would put a lot of pressure on China because economically we have tremendous power over China," he said in the wide-ranging interview.