NEW DELHI:  India summoned the ​U.S. deputy chief of mission in Delhi on ‌Friday ​to protest against U.S. military strikes on commercial vessels off the coast of Oman, an Indian source said, the second time in three days New Delhi has expressed its displeasure.

U.S. deputy chief of mission ⁠to the country, Jason Meeks, was summoned by India for the first time on Wednesday following a U.S. navy attack that killed three Indian sailors ‌on Palau-flagged oil products tanker Settebello.

On Thursday, another 20-Indian crewed ship was attacked, with no deaths or injuries ‌reported.

"MEA summoned Meeks to lodge a protest ‌against attacks on commercial vessels off the Coast of ‌Oman," the Indian ‌source said, referring to the Ministry of External Affairs as the Indian foreign ​ministry is officially ‌called.

Sushila Devi, wife of Shivanand Chaurasia, an Indian seafarer aboard the Palau-flagged tanker MT Settebello, who was among three crew members killed in one of the U.S. attacks on Indian-crewed tankers this week amid a blockade of Iran-related shipping, mourns in Deoria, Uttar Pradesh, India, June 12, 2026. REUTERS/Priyanshu Singh

"Yesterday, yet ​another vessel with 20 Indian ⁠crew on board came under attack," the source added.

The U.S. Embassy in New Delhi did not respond ​immediately ⁠to a request for ⁠comment.

New Delhi and Washington have developed a close, strategic partnership over the last two decades and India ⁠summoning a U.S. diplomat to lodge a protest is rare.

The strong ties between the two countries have come under pressure during President Donald Trump's second term, battered by Washington's tariffs and engagement with New ‌Delhi's rivals Pakistan and China.

The killing of Indian sailors comes days before ​a likely meeting between Indian Prime Minister Narendra Modi and Trump on the sidelines of the Group of 7 summit in France.