The assault on the Iraqi city of Mosul that began this week underlines the fact that the next three months will be a perilous period in international politics. Fighting is intensifying in the Middle East. Tensions are rising between Russia and the west. And relations between China and its Asian neighbours are getting edgier. All this is happening while the US is diverted by the Trump-Clinton melodrama and the transition to a new president.

For Russia and China – two countries that are openly unhappy with the US-dominated world order – a distracted America will look like an opportunity. Both Moscow and Beijing regard Hillary Clinton with suspicion and believe that her probable arrival in the Oval Office would herald a more hawkish US foreign policy. They may be tempted to act swiftly, before she has a chance to settle into the White House.

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