Activists said the Israeli military boarded and disabled boats carrying humanitarian assistance to the territory in international waters near Greece.
In guidance to immigration officers, the administration describes participating in pro-Palestinian protests and criticizing Israel as “overwhelmingly negative” factors.
The Irish government said it had called in the army after protesters blocked highways, ports and an oil refinery, causing widespread disruption.
Amid months of protest, repression and war in their native country, Iranians living abroad are navigating their biggest rifts yet.
In the first days of the U.S.-Israeli campaign against Iran, Mr. Trump pressed for a popular uprising against Tehran’s government.
Seven members of the national women’s team had sought refuge in the country after they were labeled “traitors” at home. Four of them have since changed their minds.
President Trump said protesters risk getting shot “right through the head,” a change in tone from his earlier comments that Iranians must seize the chance to take over their government.
Several senior Iranian officials showed up at the government-sponsored rally, marking Quds Day, an annual anti-Israel event that was shaken by explosions from the U.S.-Israeli aerial assault.
Britain’s government invoked rarely-used powers to ban a pro-Palestinian protest march scheduled for Sunday.
Ayatollah Ali Khamenei, who was killed during the U.S.-Israeli strikes on Iran, was deeply respected among the millions of Shiite Muslims in Pakistan and India.