https://jp.reuters.com/article/iran-tanker-mine-idJPKCN1TF03V
https://www.sankei.com/world/news/190614/wor1906140012-n1.htm
https://www.sankei.com/world/news/190613/wor1906130035-n1.html
https://www.nippon.com/ja/index.htm
https://www.bloomberg.co.jp/news/articles/2019-06-13/PT0ZVQ6K50XW01?srnd=cojp-v2
https://www.nikkei.com/article/DGXMZO46052410T10C19A6I00000/
https://www.sankei.com/economy/news/190609/ecn1906090007-n1.html
https://www.nikkei.com/article/DGXMZO45886550Q9A610C1000000/?n_cid=DSTPCS001
https://www.nikkei.com/article/DGXMZO45882140Z00C19A6000000/