Although Mayor Zohran Mamdani often seems to defer to his police commissioner, Jessica Tisch, he insisted that he had the final say in policing matters.

Vessels are wary of passing the coast of Iran in the strait, given the fragile agreement, and the number of ships traveling through it has even dropped.

John Healey, the defense secretary, said the vessels were gathering information about undersea pipelines, and said he believed President Vladimir V. Putin “would want us to be distracted by the Middle East.”