JERUSALEM — Israel on Sunday published a blacklist of 20 organizations, including a Jewish group in the United States, whose leaders it has barred from entering the country for supporting an economic, cultural and academic boycott of Israel.

The list was drawn up under a nearly year-old law enacted to combat the boycott, divestment and sanctions movement, which Israelis overwhelmingly oppose, consider anti-Semitic and view as calling for the country’s destruction.

Supporters of the pressure strategy favor the boycott of Israel until it ends the occupation of the West Bank, provides full equality under the law to Palestinian citizens of Israel and grants a right of return to Palestinian refugees. But refugees number in the millions, and their return would probably spell the end of Israel as a Jewish state.

“We have shifted from defense to offense,” said Gilad Erdan, the minister of strategic affairs, whose office drew up the list, according to an article in Ha’aretz. “The boycott organizations need to know that the State of Israel will act against them” and not allow them to “enter its territory to harm its citizens.”