US president’s reference to Japan’s 1941 attack on naval base in Hawaii has shaken the Japanese public as PM Takaichi’s silence gets mixed reaction.There has been embarrassment, confusion, and unease in Japan after US President Donald Trump used the Pearl Harbor attack during World War II to justify his secrecy before launching the war on Iran.Trump was asked by a reporter why he did not tell allies in Europe and Asia in advance of the US-Israel attack on Iran during a news conference with Japanese Prime Minister Sanae Takaichi at the White House on Friday.Recommended Stories list of 4 itemsend of listTrump cited Pearl Harbor to defend his decision saying, “Who knows better about surprise than Japan? Why didn’t you tell me about Pearl Harbor, OK?”Following the remarks, social media reaction has ranged from accusations of ignorance and rudeness by the US president to claims that he does not see Japan as an equal partner. There were calls for Japan to protest Trump’s comments.Tsuneo Watanabe, a senior fellow at the Sasakawa Peace Foundation, said in an opinion piece in the Nikkei newspaper on Saturday that the remarks signalled Trump is “not bound by existing American common sense”.“I get the impression that the comment was intended to bring the Japanese reporter [who asked the question] or Ms Takaichi into complicity in order to justify his ‘sneak attack’ on Iran during diplomatic negotiations and without telling allied countries,” Watanabe wrote.There is also a feeling that an unspoken understanding exists between United States and Japanese leader …