China and India could be affected if Donald Trump introduces tariffs of 25-50% against countries buying Russian oil, analysts and officials have suggested. Dan Sabbagh reports that the US president told NBC he would impose such measures within a month “if a deal isn’t made, and if I think it was Russia’s fault”, as he vented frustration at Vladimir Putin’s delaying tactics and attempts to discredit Volodymyr Zelenskyy, the Ukrainian president. Some countries, including China and India, are not participating in anti-war sanctions against Russian oil. Secondary sanctions or tariffs imposed directly on them by the US could further limit