Simon Jenkins@Guardian -- Donald Trump is right to extricate the US from Syria. American troops have no strategic reason to be in that country. If they stayed any longer they would only be sucked in deeper – if they tried to impose a sort of peace, they would be attacked by all sides. The outside world has no dog in the Turkish-Kurd fight. The US should get out of Syria as it must leave Iraq, Afghanistan, Saudi Arabia and the Gulf. [...] If Trump manages to end this self-defeating cycle, he deserves credit.