The Biden administration is seeking to align its position with Israel on any potential response to Iran’s attack but also recognises the Middle East is on a “knife’s edge” and a broader escalation could imperil both Israeli and US interests, reports quoting US Deputy Secretary of State Kurt Campbell. Speaking at a virtual event hosted by Washington-based think tank Carnegie Endowment, Campbell repeated the US view that what Tehran has undertaken was “deeply irresponsible” and that there must be a “return message”. “I think we recognise, as important as a response of some kind should be, there is a recognition that the region is really balancing on a knife’s edge, and real concerns about an even broader escalation or a continuing one, not just simply an exchange of sort of isolated salvos, but of more sustained hostility, which could imperil not just Israel, but our strategic interests as well,” Campbell said.