US and UK strikes on rebel-held Yemen last week marked a sharp rise in tensions around the Red Sea, where Iran-backed Houthi insurgents had been attacking shipping deemed linked to Israel.
The Houthi attacks, in protest at Israel's war against Hamas, were disrupting shipping in the commercially vital route which normally carries about 12 percent of global maritime trade.
Here is a timeline of events over the past week:
January 12
US and UK forces strike 60 Houthi missile and radar targets at 16 locations in rebel-held Yemen, the US military says, in a barrage involving more than 150 precision-guided munitions.
Five people are killed and six wounded, according to Houthi officials. In retaliation, the Houthis fire "at least one" missile without hitting any target.
The rebels declare American and British interests as "legitimate targets" after the overnight strikes.
January 13
A further US strike hits the rebels' Al-Dailami airbase in the capital Sanaa, the US military says, after Houthi warnings they will continue attacking ships in the Red Sea.
January 14
US forces shoot down a Houthi cruise missile fired at the USS Laboon destroyer.
January 15
A Houthi missile hits the US-owned cargo ship Gibraltar Eagle in the Gulf of Aden, south of the Red Sea, causing a fire on board but no casualties.
January 16
The US destroys four anti-ship ballistic missiles prepared to launch from Houthi-controlled Yemen.
Later, a Houthi missile strikes a Greek-owned, Malta-flagged bulk carrier sailing in the Red Sea, causing limited damage and no injuries.
January 17
A Houthi drone strikes the US-owned bulk carrier Genco Picardy, causing "some damage" but no injuries, US Central Command says.
US forces then take out 14 missiles that were "loaded to be fired" from Houthi-controlled Yemen.
January 18
The Houthis claim "direct hits" on a US cargo ship in the Gulf of Aden, although US forces say the missiles missed.
The US also says it hit two anti-ship missiles that were prepared for launch into the Red Sea.