Iran-backed Houthis in Yemen said they carried out new missile and drone attacks on Saudi Arabia overnight, while Saudi civil defense said a projectile fell near the border and injured two people. Yemen’s government called the Houthi advance along the Red Sea coast a painful setback and said its forces would fight back. The escalation has alarmed markets, displaced more than 85,000 people this month, and brought the Houthis closer to a U.S. base in Djibouti.

This image taken from undated video released by the Ansar Allah Media Office, the media arm of Yemen's Houthi rebels, on Saturday, shows Houthi fighters inspecting what the group says is an abandoned position during their advance against Saudi-backed forces at an undisclosed location in southern Yemen. AP-Yonhap

CAIRO — Iran-backed Houthis in Yemen overnight claimed new attacks on neighboring Saudi Arabia , as the Saudi-backed Yemeni government described the rebels' swift advance along the Red Sea coast as a “painful” development in a new front in the Iran war.

The Houthis' capture of a key port city and an island on the Bab el-Mandeb Strait, a crucial shipping alternative to the Strait of Hormuz, in recent days has alarmed markets and Yemeni civilians who fear a return to devastating civil war.