An American Senator on Wednesday urged US Defence Secretary Lloyd Austin to take up the issue of sale of Russian S-400 missile system during his visit to India later this week along with their concerns on human rights issues.

Getting the US-India partnership right is critical to addressing 21st century challenges, and that includes urging the Indian government to uphold democratic values and human rights, Senator Robert Menendez, Chairman of the powerful Senate Foreign Relations Committee, wrote in a letter to Austin.

Austin, the first ever US defence secretary to include India on his maiden foreign trip, is scheduled to meet his counterpart Defence Minister Rajnath Singh, along with External Affairs Minister S Jaishankar and National Security Advisor Ajit K Doval, during his New Delhi visit from March 19 to 21.

In meetings with Indian counterparts during your upcoming visit, I strongly encourage you to make clear that in all areas, including security cooperation, the US-India partnership must rest on adherence to democratic values, Menendez said in his letter, a copy of which was released to the press on Wednesday.

In his capacity as Chairman of the Senate Foreign Relations Committee, Menendez plays a key role in influencing the country’s foreign policy and national security. Among his predecessors include President Joe Biden, who occupied this position during former president George Bush’s administration and former secretary of state John Kerry.

On India’s reported plan to purchase the Russian S-400 missile system, Menendez said that if India chooses to go forward with its purchase, that act will clearly constitute a sanctionable transaction with the Russian defence sector under provisions of the Countering America’s Adversaries Through Sanctions Act or CAATSA.