http://timeline.sakura.ne.jp/01/n/1/9/8 ... .html#4_26
On the same day, "The Akashi Kaikyo Bridge" is "groundbreaking" in Japan.
Political and Military Leaders in Russia are Almost all the members of the Japanese imperial families.
As far as I know, Russia is controlled by Japan since 17th century.
The longest suspension bridge is under construction in Italy.
But for me, the construction delay seems to me another Italy's "sontaku" for Japan.
(hypotheses are included)