North Korea has stepped up preparations for the 70th anniversary of the country's founding later this month, Kyodo News confirmed Wednesday.Colorful signs with the words "Cerebrating the 70th anniversary of founding" have been put up along Pyongyang's main roads, with some high school and university students apparently practicing for torchlight marches and mass games toward Sunday's anniversary.A large number of tourists as well as official delegations have arrived in the North Korean capital ahead of the anniversary. More than 100 foreign journalists are expected to cover related events, l…READ FULL ARTICLE