Why has Trump started using this weirdly formal sign-off on social media posts about Iran?

It might be his attempt at sounding ‘official’ or just the latest evolution in the president’s branding. Either way, it’s become another Trump-linked meme.

Several eyebrows were raised to full mast on Tuesday morning when a visibly upset President Trump dropped an f-bomb on live TV. In response to a reporter’s question about the tentative ceasefire between Israel and Iran, Trump replied that the two countries “have been fighting so long and so hard that they don’t know what the f-ck they’re doing,” possibly the first time a U.S. president has purposefully unloaded that term on camera.