BRUSSELS — The military wing of Hezbollah, the powerful Lebanese Shiite group, was blacklisted by European Union ministers as a terrorist organization on Monday in a policy shift that reflected their concern about Hezbollah’s suspected involvement in Europe-based bombings and its growing role in the Syria war.

The blacklisting designation was welcomed by the United States and Israel, which have long regarded Hezbollah as a terrorist organization. Hezbollah and Iran, the group’s biggest ally, denounced the designation as a capitulation to United States and Israeli pressure. “It appears that the decision was written with an American hand in Zionist ink,” Hezbollah said in a statement from Beirut.

The immediate practical effects of the new designation were not clear, but symbolically at least they were an embarrassment to Hezbollah, the most important political organization in Lebanon. Many Lebanese expressed concern the designation would damage Lebanon’s international relations and worsen internal tensions, and Lebanon’s president, Michel Suleiman, asked the European Union to “re-examine its decision,” Lebanese media reported..

The sanctions that result from the European Union designation are expected to include asset freezes and possible travel bans on some individuals. But some sanctions experts said the policy shift set a precedent that over time could compromise Hezbollah’s fund-raising operations.