In Syria, regime forces upped the pressure on two of the last rebel bastions on Monday, pounding the Eastern Ghouta enclave near Damascus and the northern province of Idlib.<br/><br/>The Syrian Observatory for Human Rights said shelling and air strikes on Ghouta, which government forces have besieged for four years, killed at least 20 civilians. <br/><br/>Syrian and Russian aircraft also pounded targets in the northwestern region of Idlib, pressing a week-old operation targeting the last province in the country to escape government control.