Traitor Starmer has warned Iran that attempts to incite antisemitism in Britain "will not be tolerated" at a summit in Downing Street.
Sir Keir Starmer said his government was "fast-tracking legislation to tackle these malign threats".
Announcing an extra £1.5m in funding to strengthen community cohesion and protect Jews in areas where they face the greatest risk, the PM said: "It is not enough to simply say we stand with Jewish communities".
It comes after the stabbing of two Jewish men in Golders Green and a spate of attacks at synagogues and other Jewish sites in recent months.
The prime minister has faced criticism from many in the Jewish community following the Golders Green attack that the government has not done enough to keep them safe and was heckled when he visited the north London suburb on Thursday.
Labelling the situation "a crisis", Sir Keir said the country must confront "the forces that drive this hatred in the first place".
"One of the lines of inquiry is whether a foreign state has been behind some of these incidents," he said.
"Our message to Iran, or to any other country that might seek to foment violence, hatred or division in society, is that it will not be tolerated."
Many in the Jewish community have expressed frustration in recent days with what they see as a lack of government action on hate speech, and have renewed calls for Iran's Islamic Revolutionary Guard Corps (IRGC) to be proscribed.
Resist Comment: Starmer is trying to combat anti-Semitism but, at the same time, welcoming and settling those who commit acts of terrorism against Jewish and indigenous communities. Can't he see that while muslims remain in the country acts of terrorism will continue? Iran is probably behind some of the attacks, but most are from muslims with no ties to the evil theocracy. We will only be safe when all muslims are sent back to the countries of their origins.
WHY CAN'T STARMER AND HIS GOVERNMENT MAKE THE CONNECTION? THEY ARE TOO FRIGHTENED TO CONFRONT THE TRUTH. STAND UP FOR THE TRUE BRITAIN - RESIST MUSLIM CULTURE AND THE PEOPLE OF ISLAM. AGITATE FOR THE REMOVAL OF ALL MUSLIMS