Iran has equipped 51 of its cities and towns with civil defense systems to thwart any possible foreign attack, a senior defense official said on Saturday, amid an escalation of tensions with Israel and the United States. The civil defense equipment enable Iran’s armed forces to “identify and monitor threats by using round-the-clock software according to the type of the threat and risk,” deputy defense minister General Mehdi Farahi was quoted as saying by Iranian media. “These days, depending on the strength of countries, the form of battles has become more complicated,” said Farahi, adding that hybrid forms of warfare including cyber, biological and radioactive attacks, have replaced classical wars. He did not name the countries that could threaten Iran. Iran has accused Israel and the United States of cyberattacks in recent years that have impaired the country’s infrastructure. Iran has also accused Israel, which has neither confirmed nor denied responsibility, of sabotaging its nuclear facilities. US-Iran military tensions have also long dogged the region. In the latest incident, Iran seized US military sail drones in the Red Sea earlier this week — even as both countries pursue nuclear talks. On Tuesday, the US Navy said it foiled an attempt by Iran’s Revolutionary Guards naval forces to capture an unmanned surface vessel operated by the US 5th Fleet in the Gulf. Iran said the drone was a danger to maritime traffic.