As Ukraine’s president Volodymyr Zelensky replaces the head of his personal protection unit after two of its officers were detained over an alleged assassination plot against him. We examine what this and other staffing shake-ups might indicate. Then: after Iran-backed Houthi rebels vow to broaden their attacks in the Red Sea, we ask how much longer companies can afford alternative routes. Plus: the latest from Trump’s hush-money trial and could the UK be about to get a new political party?

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