Photo provided by Korean Central News Agency (KCNA) on May 29, 2015 shows top leader of the Democratic People's Republic of Korea (DPRK) Kim Jong Un (not in the pic) inspecting the general tree nursery recently. Kim Jong Un went round different places of the nursery to learn in detail about its construction and management. (Xinhua/KCNA)

Photo provided by Korean Central News Agency (KCNA) on May 29, 2015 shows top leader of the Democratic People's Republic of Korea (DPRK) Kim Jong Un (1st L) inspecting the general tree nursery recently. Kim Jong Un went round different places of the nursery to learn in detail about its construction and management. (Xinhua/KCNA)

Photo provided by Korean Central News Agency (KCNA) on May 29, 2015 shows top leader of the Democratic People's Republic of Korea (DPRK) Kim Jong Un (3rd L) inspecting the general tree nursery recently. Kim Jong Un went round different places of the nursery to learn in detail about its construction and management. (Xinhua/KCNA)

Photo provided by Korean Central News Agency (KCNA) on May 29, 2015 shows top leader of the Democratic People's Republic of Korea (DPRK) Kim Jong Un (not in the pic) inspecting the general tree nursery recently. Kim Jong Un went round different places of the nursery to learn in detail about its construction and management. (Xinhua/KCNA)