A security breach involves unauthorized access or actions that compromise the safety or integrity of a person or system. Recently, External Affairs Minister S Jaishankar experienced such a breach during his visit to London. Pro-Khalistan protestors disrupted his engagement at Chatham House. - A pro-Khalistan protestor breached security during S Jaishankar's visit to London, attempting to block his convoy and tearing the Indian flag. - India has strongly condemned the security breach and has demanded that the UK take decisive action against those responsible. - The UK has also condemned the incident, stating that attempts to intimidate or disrupt public events are completely unacceptable. - India has summoned the UK chargé d'affaires to lodge a formal protest over the security lapse. - The incident occurred outside Chatham House, where Jaishankar was participating in a discussion.