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Following the deadly attack on a Jerusalem synagogue, as well as the stabbing of a Jewish man in Belgium, the security unit of British Jewry advised vigilance around Jewish institutions.

The Community Security Trust issued the warning Nov. 18 in a security bulletin that contained nine instructions to Jewish institutions, including a call to “ensure visible external security patrols take place to deter and detect hostile activity” and immediate reporting to police of any suspicious behavior.

The warning bulletin also mentioned the stabbing of a Jewish man on his way to synagogue in Antwerp, Belgium, on Nov. 15.

Across Europe, Jewish communities expressed shock and outrage at the Jerusalem synagogue attack.

CRIF, the umbrella of French Jewish communities and organizations, expressed its “horror.” Its president, Roger Cukierman, said that the presence of Hamas, which praised the attack, in the government of Palestinian Authority President Mahmoud Abbas would “disqualify [the legitimacy] of initiatives for unilateral recognition of a Palestinian state.”

Rabbi Pinchas Goldschmidt, president of the Conference of European Rabbis, said in a statement, “Jewish communities around the world are united this morning in immeasurable grief.” — jta