Fresh from the historic North Korea-U.S. summit,... U.S. Secretary of State Mike Pompeo arrived at Osan Air Base on Wednesday... for his first official visit to South Korea since he took office in April.<br /> Speaking to reporters upon his arrival,.. Pompeo said the U.S. wants to institute a quick program on Pyongyang's promise to denuclearize,... adding the U.S. is hopeful they can achieve it in the next two-and-a-half years.<br />Pompeo also said joint South Korea-U.S. military exercises will resume if North Korea stops negotiating in good faith over its nuclear program. <br />