Iran fired multiple ballistic missiles at US military bases in the Middle East on the 28th. The US Central Command announced that it had intercepted all of Iran's missile attacks and stated that the US military was maintaining a high state of alert. This attack brought the ceasefire between the United States and Iran, which had been ongoing since the 24th, to a crisis. While the background of Iran's attack is not yet clear, it occurred after the United States halted airstrikes against Iran for 13 consecutive days.