The North Korean Chongryon-affiliated '' Fukushima Korean School '' sheltered 18 Japanese citizens from March 18 until the end of March . However , the Chongryon criticized the Ministry of Foreign Affairs of Japan for not officially recognizing North Korea as one of the countries that sent humanitarian aid to the survivors of the 2011 Tōhoku earthquake and tsunami
2011 Tōhoku earthquake and tsunami
2011 Tōhoku earthquake and tsunami
Chongryon