Iran fired air defense batteries early Friday morning as explosions could be heard near a major air base near Isfahan, raising fears of a possible Israeli strike following Tehran's unprecedented drone-and-missile assault on the country. It remained unclear if the country was under attack, as no Iranian official directly acknowledged the possibility and Israel's military did not respond to a request for comment. However, tensions have remained high in the days since the early Saturday assault on Israel amid its war on Hamas in the Gaza Strip and its own strikes targeting Iran in Syria.