After the US imposed a 50% tariff on India, including a 25% duty for buying Russian oil, many are questioning why China was spared such action despite being one of Russia’s biggest oil buyers.US President Donald Trump said on Friday (local time) that he does not see an immediate need to impose retaliatory tariffs on countries like China for purchasing Russian oil, but cautioned that such action could be taken “in two or three weeks,” Reuters reported.Earlier, Trump had announced a 25% additional tariff on India for buying Russian oil, accusing New Delhi of supporting Moscow’s ‘war machine.’ After Trump’s secondary tariffs, total duties for Indian exports to the US now stand at 50%.Trump has repeatedly threatened sanctions on Moscow and secondary sanctions on countries that continue to buy its oil if no moves are made to end the war in Ukraine. As for China, when asked by Fox…