NEW DELHI/WASHINGTON - The United States has abruptly scrapped much-anticipated high-level talks with India amid growing differences between the two countries, partly stemming from a chaotic administration in Washington where New Delhi is clearly not a priority country anymore, reported Times of India on Thursday.

US officials are said to have conveyed to their Indian counterparts that talks between the US defence secretary and secretary of state and their Indian opposites, scheduled for July 6 in Washington, are being “postponed” due to “unavoidable reasons.”

“US @SecPompeo sought EAM @SushmaSwaraj understanding, and they agreed to identify new mutually convenient dates to hold the dialogue at the earliest, in India or the US,” Raveesh Kumar, spokesman for India’s external affairs ministry, tweeted on Wednesday night.

This is the second time that the so-called 2+2 dialogue has been scrapped after an earlier effort to get them going in March had to be “postponed” when then secretary of state Rex Tillerson was fired by President Trump.

The postponement comes amid wide differences between Washington and New Delhi, including threat of sanctions against India on two fronts: If it goes ahead with the anticipated purchase of S-400 missile system from Russia, and if it does not end oil purchases from Iran.

The two sides also have serious differences on trade and tariff issues, particularly after President Trump elevated a trivial matter of tariff on Harley Davidson motorcycles worth less than $5 million into a signature issue, including repeated public smackdown of India.

Both issues have exasperated New Delhi, which is loath to give up its long-time friends and its economic interests to please a whimsical country that changes its policy frequently, sometimes on account of its domestic politics, and lately on the basis of misrepresentation.

Meanwhile, Nikki Haley on Thursday urged India to reconsider its ties to Iran, one of its key energy suppliers, as fresh US sanctions on buyers of Iranian oil loom. Washington has stepped up pressure on major Iranian customers to stop importing its oil, warning no trading partner will be exempt from new economic sanctions when they bite from November 4.

India imports the overwhelming majority of its oil and Iran is the third-largest supplier to the nation of 1.25 billion. Haley said she understood India “can’t change its relationship with Iran in a day” but said she used a meeting with Prime Minister Narendra Modi in New Delhi to encourage a reassessment. “I also think for the future of India, and the future of being able to get resources and who they’re dependent on, I would encourage them to rethink their relationship with Iran,” she told broadcaster NDTV after an address in New Delhi. “I think as a friend, India should also decide is this a country that they want to continue doing business with.”

US President Donald Trump withdrew the United States from the Iran nuclear deal last month, re-imposing sanctions that had been suspended in return for curbs on Tehran’s nuclear programme.

US officials said Washington would be asking major Iranian customers to reduce their oil imports to zero, and warned no exemptions would be made when the sanctions were enforced.

Before the 2015 nuclear deal between Iran and six major powers, various buyers of Iranian oil including India had waivers or exemptions to US sanctions. India’s foreign ministry said Thursday however that the Islamic republic was a “very traditional partner” that enjoyed “historical, civilisational linkages” to India.

“She has her views, and ours views on Iran are very clear,” said ministry spokesman Raveesh Kumar of Haley, whose two-day visit to India also included visits to holy sites in the Indian capital.

“We will take all necessary steps, including engagement with relevant stakeholders to ensure our energy security.”

Haley’s visit coincided with revelations that a long-anticipated meeting between US and Indian defence and foreign ministers, known as a 2+2, had been delayed for a second time. The UN ambassador played down rumours of a rift, saying the meeting would be rescheduled “very soon” and was “an important sign of how much our security and defence cooperation has grown in recent years”.

Washington has put new emphasis on its military ties to New Delhi and its regional role as a counter to China’s rise. But it could still fall foul of US sanctions imposed last August threatening sanctions on any country doing business with Russia’s defence and intelligence sectors. India, the world’s top defence importer, had been in talks with Russia to buy missile systems when the sanctions were announced and New Delhi has said the embargo would not affect ties to Moscow.

Haley said Thursday that “anybody, any country, that does business with Russia... there are sanctions”.