of reconciliation and relations began to thaw again. The resurgence of the nuclear issue two years later would again cast relations in doubt, but South Korea has sought to play the role of intermediary rather than antagonist, and economic ties at the time seemed to be growing again. Despite the Sunshine Policy and efforts at reconciliation, the progress was complicated by North Korean missile tests in 1993, 1998, 2006 and 2009. , relationships between North Korea and South Korea were very tense; North Korea had been reported to have deployed missiles, Ended its former agreements with South Korea and threatened South Korea and the United States not to interfere with a satellite launch it had planned. As of 2009 North Korea and South Korea are still opposed and share a heavily fortified border. On May 27, 2009, North Korea media declared that the armistice is no longer valid due to the South Korean government's pledge to "definitely join" the Proliferation Security Initiative. To further complicate and intensify strains between the two nations, the sinking of the South Korean warship Cheonan in March 2010, killing 46 seamen, is as of May 20, 2010 claimed by a team of researchers around the world to have been caused by a North Korean torpedo, which the North denies. South Korea agreed with the findings from the research group and president Lee Myung-bak declared in May 2010 that Seoul would cut all trade with North Korea as part of measures primarily aimed at striking back at North Korea diplomatically and financially. As a result of this, North Korea severed all ties and completely abrogated the previous pact of non aggression. In November 2010, the Unification Ministry officially declared the Sunshine Policy a failure, thus bringing the policy to an end. On November 23, 2010, North Korean artillery shelled Yeonpyeong with dozens of rounds at Yeonpyeong-ri and the surrounding area. According to a 2013 BBC World Service Poll, 3% of South Koreans view the Democratic People's Republic of Korea's influence positively, with 91% expressing a negative view. A 2015 government-sponsored poll revealed that 41% of South Koreans consider North Korea to be an enemy, with negative views being more prevalent among younger respondents. Still, in a 2017 poll, 58% of South Koreans said they don't expect another war to break out with North Korea. Free trade agreements South Korea has the following trade agreements: South Korea-ASEAN