This is exactly what Jimmy Kimmel does in the clip above, digging out some footage of Donald Trump in 2011 saying he thinks Obama "will start a war with Iran because he has absolutely no ability to negotiate" and calling him "weak and ineffective."
В России ответили на имитирующие высадку на Украине учения НАТО18:04
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The “Knocking on Wood” Wikipedia page mentions Roud’s conclusion, and this claim of a 19th century origin has circulated online as the final say on the matter. If you go back to the original, though, Roud’s proposal actually ends on an ambivalent note: “Before this theory [of 19th century origins] can be finally accepted, however, an examination of the history of European forms of this custom would be advisable.”
“加快高水平科技自立自强”，如何把握这一“十五五”战略任务对未来中国的重大意义，坚定以科技创新引领新质生产力发展？