India, March 20 -- Donald Trump-led United States on Thursday imposed new Iran-linked sanctions on one individual and several entities, including a Chinese "teapot" oil refinery. for purchasing and processing Iranian crude oil. This was the fourth round of sanctions on Iran's oil sales since Trump said last month he would exert maximum pressure to grind Iranian exports to a halt.

Donald Trump has demanded that Tehran stop its nuclear weapons and stop backing militants. China is also on Trump's radar as the US president imposed several tariffs against the country. China, one of the biggest rivals of the US, is the largest importer of Iranian oil.

The refinery Treasury Department targeted for sanctions is China-based Shandong Shouguang Lu...