The United States and Britain should take real action and stop supporting the Saudi-led massacre of civilians in Yemen, says an analyst.

An investigation into a Saudi air raid against a school bus in Sa’ada province, which left at least 51 civilians dead, is “not sufficient” and Western powers are expected to stop giving arms and surveillance support to the Saudi war on Yemen, Saeed Shahabi, a political analyst and Middle East expert, told Press TV on Monday.

“There needs to be an action. The action should be that the United States and Britain must withdraw their support and their contribution to the war on Yemen and the United Nations must stop giving its excuses for the Saudis that they are there to defend what they call the internationally recognized government,” Shahabi said.

Saudi Arabia launched a war on Yemen in March 2015 to reinstate former Yemeni president Abd Rabbuh Mansur Hadi, a close ally of Riyadh, and eliminate the popular Houthi Ansarullah movement.

PressTV-‘US bomb likely used in fatal Saudi air raid on Yemeni kids’

Pieces of a 500-pound American bomb have been found at the site of a bloody Saudi air strike on a bus carrying Yemeni schoolchildren, a journalist says.