President Trump said the fragile cease-fire was on “life support,” and India’s leader urged residents to cut back on purchases and travel.

The slick, captured in satellite images near Kharg Island in the Persian Gulf, has raised concerns about the condition of Iran’s oil infrastructure.

The drone and missile attacks were the first of their kind since the U.S.-Iranian cease-fire began last month. They coincided with reported clashes between American and Iranian vessels in the Strait of Hormuz.

Conservationists say they have recorded several new adult and cub Asiatic cheetahs, a critically endangered subspecies found only in Iran.

Abbas Araghchi, Iran’s foreign minister, met with President Vladimir V. Putin in Moscow. Russia has tried to avoid entanglement in the conflict while remaining a key player in the region.