India has asked its nationals in Israel to remain vigilant and "observe safety protocols as advised by local authorities." The foreign ministry has also issued helpline numbers for its residents in the country. Several flights have been cancelled in Israel making it difficult for people to leave the country. In a surprise attack, the Hamas group fired thousands of rockets and sent dozens of fighters into Israeli towns. In response to the deadly attacks, the Israel defense forces also declared a "readiness for war". The forces launched "Operation Swords of Iron", striking a number of targets in the Gaza Strip.