Russian President Vladimir Putin imposed martial law in four recently annexed Ukrainian territories as Moscow’s hold over one of them, the southern region of Kherson, became more precarious. Putin’s martial law decree, which he announced on Wednesday during a National Security Council meeting, expands the powers of the Russian occupying administrations in the four regions – Luhansk, Donetsk, Kherson and Zaporizhzhya – and allows authorities to put tighter controls on the civilians living there. He justified the move by saying Kiev had refused to recognize the results of UN-condemned referendum…