As the United States reportedly plans a flurry of fresh sanctions on Iran before Donald Trump’s presidency comes to an end, Tehran has told its rivals in the Middle East not to count heavily on Washington to help them in the future. “Trump’s gone in 70 days but we’ll remain here forever,” the Iranian Foreign Minister Mohammad Javad Zarif tweeted on Monday in what he called “a sincere message to our neighbours”. In his tweets – one in English and another in Arabic – Zarif urged the region to stop “betting...