US and UK spy chiefs warn Middle East crisis could raise domestic terror threat

The MI5 director general, Ken McCallum, with the FBI’s director, Christopher Wray, in July. Hamas’s attack on Israel has heightened counter-terror concerns. Photograph: Dominic Lipinski/PA

The heads of MI5 and the FBI have issued an unprecedented joint warning that the threat of a domestic terrorist attack could rise as a result of the crisis in the Middle East.

The counter-terror chiefs said Jewish communities and organisations, as well as other groups, may face a heightened danger from lone actors, Hamas militants and Iran on British or US soil.