The United States has withdrawn most of its military officials deployed in Saudi Arabia for coordinating Saudi-led airstrikes in Yemen.
"In our discussions with the Saudi-led coalition, we have pressed the need to minimise civilian casualties".
U.S. officials have regularly urged their major Middle East ally to avoid harming non-combatants.
Researchers say that they began digging in 2012 and it took almost four years to find the oldest bone.
"That's the main reason behind it, and it's based on the amount of requests that we receive from the Saudis".
The Pentagon also has sent usa military lawyers to help train their Saudi counterparts on how to ensure the legality of coalition strikes.
The joint cell was established around the start of coalition operations in March a year ago, McConnaughey said.
Since March 2015, Saudi Arabia and some of its Arab allies have been launching deadly airstrikes against the Houthi Ansarullah movement in an attempt to restore power to the fugitive former President Abd Rabbuh Mansour Hadi, a close ally of Riyadh.
But it has said it uses highly accurate laser and GPS-guided weapons, and it verifies targets many times in order to avoid civilian casualties.
MSF deeply regrets the consequences of this evacuation for our patients and our Yemeni Ministry of Health medical colleagues who will continue to work in the health facilities under unsafe conditions.
The internationally recognized government and the United Nations rejected the council.
The rebels have retaliated with cross-border attacks. Saudi Arabia's civil defense directorate said that the Houthis had launched a missile over the border into the Najran region, killing a Saudi and wounding five Yemenis and a Pakistani who were residents there.
Thousands of civilians have been killed in the violence.
A soldier looks at people rallying to show support to a political council formed by the Houthi movement and the General People's Congress party to unilaterally rule Yemen by both groups, in the capital Sanaa, August 20.
U.S. officials have regularly urged their major Middle East ally to avoid harming non-combatants in Yemen.
In July, news of over 10,000 foreign laborers from starving and stranded in Saudi Arabia prompted global outrage, and subsequent action from Saudi and Indian governments.
Hossein Jaberi Ansari, Iranian Deputy Foreign Minister for Arab-African Affairs, made the remarks on Saturday, while deeming Yemeni people's massive support for the elected parliament and its decisions "highly significant" and 'worthy of attention from the global community'.
On Tuesday a Saudi-led coalition air strike hit a hospital operated by MSF in the northern Hajja province injuring 24 and killing 19 people including one of its staff members, the group said.
The charity said their hospitals have been repeatedly detroyed by Saudi-led air strikes, even after they shared the satellite coodinates of their hospitals with parties involved in the conflict.