Russia and China have vetoed a UN resolution to impose sanctions on Syria over the alleged use of chemical weapons.

 
It is the seventh time Russia has vetoed a UN Security Council resolution to protect the Syrian government.

 
China has also vetoed six security council resolutions on Syria since the civil war began in 2011.

 
Syria agreed to destroy its chemical weapons in 2013 under an agreement negotiated between Russia and the US.

 
The Syrian government has previously denied carrying out chemical attacks.

 
However, investigations by the UN and international chemical weapons watchdog have found that Syrian government forces carried out three chemical weapons attacks in 2014 and 2015.

Read more here: bbc.com