U.S. President Donald Trump heads into the 2020 election year claiming credit for a strong economy and trade victories over China and Japan that he says will significantly benefit American manufacturers and farmers.On the diplomatic front, however, one of Trump's biggest ambitions -- to rid North Korea of its nuclear weapons -- is facing a major test as Pyongyang increases its provocations again amid the stalled denuclearization talks.While Trump made history in June last year by becoming the first sitting U.S. president to meet a North Korean leader, little progress has been seen toward pe…READ FULL ARTICLE