President Trump and Prime Minister Narendra Modi spoke by phone Tuesday.

WASHINGTON (Diya TV) — President Donald Trump extended an official White House invitation to Indian Prime Minister Narendra Modi during a phone call Tuesday, four days after the Republican took the oath of office.

During the phone call, the leaders of the world’s two greatest democracies discussed economic and defense cooperation and regional security issues, the White House said in a statement.

Modi was one of the first world leaders to extend his congratulations to Trump after his dramatic November election victory. In a series of tweets, the prime minister said he looked forward to working alongside President Trump to “further deepen” the relationship between the two nations in an effort to “realize the full potential of our cooperation.”

While on the campaign trail, Trump made mention to only two nations his administration would be looking to strengthen its ties with: Israel and India. He expressed admiration for Modi on more than one occasion, referring to the prime minister as a “great man” who was “very energetic in reforming India’s bureaucracy.”

Trump also said he had great faith in the country, and shared a unique relationship with its people.

“Generations of Indian and Hindu Americans have strengthened our country…your values of hard work, education and enterprise have truly enriched our nation.”

The call took place shortly after the Senate Foreign Relations Committee gave their stamp of approval on the first phase of the appointment process for South Carolina Gov. Nikki Haley to become the U.S. ambassador to the United Nations. Upon her appointment, Haley will become the first Indian-American to hold a Cabinet-level position in U.S. history.

President Pranab Mukherjee has also invited Trump to visit India.