DUBAI, United Arab Emirates —  Israel stepped up airstrikes against Iranian missile launchers and factories Tuesday, and Iran retaliated across the Gulf region, disrupting energy supplies and travel. As explosions rang out in Tehran and in Lebanon — where Israel said it struck Hezbollah militants — the American embassy in Saudi Arabia came under drone attack. Four days into a war that President Donald Trump suggested would last several weeks but perhaps longer, hundreds of people have been killed, the vast majority in Iran. Information coming out of Iran has been limited because of poor communications, round-the-clock airstrikes and tight […]... Keep on reading: Israel steps up airstrikes in Tehran, Iran widens response