The US and UK strikes in Yemen have only aggravated the possibility of large-scale conflict in the already volatile Middle East.

Saudi-led coalition aircraft strikes a military police camp in the Houthi-controlled Yemeni capital Sanaa, killing at least 39 people and wounding 90 more, including some prisoners, an official and witnesses says.

Air raids on Yemen's rebel-held capital kill more than 30 people, including civilians, local and international aid organisations say.

At least 13 people were killed and 38 others wounded in the bombing of a wedding in a rebel-held Yemeni town, a medical source said on Thursday.

At least 27 people, most of them women and children, were killed in an air strike on a wedding party in southwestern Yemen, a local official and residents say.

Saudi-led coalition aircraft have carried out fresh air strikes on Yemen's capital, Sanaa, hours before a five-day ceasefire is set to begin.

Rebels in Yemen say they will respond "positively" to a ceasefire offer by the Saudi-led coalition that has been carrying out air strikes against them.

Two air strikes in Yemen has killed at least 40 people, most of them civilians and has wounded dozens of others, medical sources said.