External Affairs Minister Sushma Swaraj and Defence Minister Nirmala Sitharaman were to travel to the U.S. to take part in the meeting.

The much anticipated dialogue, between the defence and foreign ministers of India and the United States scheduled for July, has been postponed.

The Ministry of External Affairs said the message postponing the talks came from the U.S. Secretary of State Mike Pompeo, even as U.S. President Donald Trump’s ambassador to the United Nations, Nikki Haley, met Prime Minister Narendra Modi here on Wednesday. Mr. Pompeo spoke to External Affairs Minister Sushma Swaraj and expressed regret.

“U.S. Secretary of State Pompeo spoke to External Affairs Minister Sushma Swaraj a short while ago to express his regret and deep disappointment at the U.S. having to postpone the 2+2 Dialogue for unavoidable reasons,” said Raveesh Kumar, Official Spokesperson of the Ministry of External Affairs in a late evening message on his social media account.

“Secretary Pompeo sought External Affairs Minister Swaraj’s understanding and they agreed to identify new mutually convenient dates to hold the dialogues at the earliest in India or the U.S.,” said the Spokesperson.

The talks were expected to boost bilateral ease of ties in the backdrop of growing disagreement over the Iran nuclear deal and the brewing tariff war between the two sides. The high-level dialogue was designed to address bilateral issues following a summit-level meeting between President Donald Trump and Prime Minister Modi in 2017. Both Defence Miniser Nirmala Sitharaman and External Affairs Minister Sushma Swaraj were expected to travel to the U.S. for the meeting with Secretary of Defence Mattis and Secretary of State Pompeo.

The talks were postponed earlier once when the previous Secretary of State Rex Tillerson was asked to quit by President Trump in March 2018. It was previously scheduled for April. However the latest postponement which is also being considered as cancellation by some quarters comes in the backdrop of growing differences between India and the U.S. over the Iran nuclear deal.

Last week, External Affairs Minister Swaraj met her French counterpart Jean Yves Le Drian where both sides agreed to “maintain” the Iran nuclear deal that allows for global trading with Tehran.

The latest reports suggest that the U.S. has given a November deadline to Indian and Chinese companies that continue to trade with Iran disregarding U.S. Treasury’s sanctions.

The Trump administration withdrew from the Iran deal also known by the acronym JCPOA (Joint Comprehensive Plan of Action) in May.

Earlier, Ms. Haley who is visiting India for the first time since taking over as the envoy of President Trump in 2017 described the meeting with Prime Minister Modi as the one representing two democracies.

“”Great discussion with Prime Minister Narendra Modi on trade, defence, regional security, and strengthening our partnership. As the world’s oldest and largest democracies, our friendship is strong,” said Ambassador Haley on a social media platform after meeting Mr. Modi.

Ms. Haley also met Ms. Swaraj.

She began her three-day tour to India by visiting the 16th century memorial of Emperor Humayun located in South Delhi.