South Korean President Park Geun-hye arrived in Washington on Monday for her first summit with President Barack Obama and a speech before a joint session of Congress. Park flew in from New York, where she held talks with South Korean-born U.N. Secretary-General Ban Ki-moon and met with South Korean residents. Upon arrival in Washington, she headed directly to Arlington National Cemetery and paid her respects. The White House summit, set Today, is expected to focus on how to deal with North Korea. The meeting comes as Pyongyang has toned down war rhetoric and begun talking about the possibility of dialogue with Washington after weeks of nuclear strike threats and other menacing bombast against South Korea and the United States. But in inter-Korean relations, no signs of a breakthrough are in sight as Pyongyang has spurned Seoul's calls for talks about saving the suspended joint industrial complex in its border city of Kaesong from permanent closure. I hope that Park and Obama use the summit to try to forge a united front on the North.