India, Feb. 6 -- The Indian government is assessing the potential impact of US President Donald Trump's restoration of his "maximum pressure" campaign on Iran, especially the move to remove waivers on sanctions related to the Chabahar port, people familiar with the matter said on Thursday.

Trump signed a national security presidential memorandum on Tuesday to reimpose the tough policy on Iran practiced during his first term. The threat of secondary US sanctions during that term had forced India to stop Iranian crude oil purchases in May 2019. Till then, Iran was among India's top three energy suppliers.

The new US presidential memorandum directs secretary of state Marco Rubio to "modify or rescind sanctions waivers, particularly those t...