Yemen's Huthi rebels have resumed their attacks on Red Sea shipping, saying they aim to force Israel to cease fire in Gaza -- a move that threatens a truce with Washington and rattles maritime trade.

Houthi rebels in Yemen have launched a violent new wave of attacks on ships in the Red Sea, sinking two vessels and killing crew members.

Israel has carried out its first strikes against Houthi targets in Yemen since the Israel-Iran ceasefire, attacking ports and a power plant around midnight local time Sunday night into Monday morning.