U.S. Secretary of State Mike Pompeo has vowed that Washington will exert its best efforts to make its planned summit with North Korea a success. <br /> Speaking to reporters at the State Department on Tuesday,... Pompeo said he hasn't seen anything to give the Trump administration (quote) "a pause" about the scheduled June 12th summit. <br />Pompeo's remarks came a matter of hours after President Trump suggested the summit may not take place next month in Singapore. <br />