dubai yemen ex-president ali abdullah saleh successful operation sanaa hospital russian medical team fly perform government source say saturday russian team arrive sanaa two days ago operate saleh friday wound sustain assassination attempt 2011. saleh general people congress party say procedure successful condition stable saleh severely wound attack presidential palace sanaa june 2011. go unite state treatment one occasion travel ban impose unite nations security council impose sanction saleh 2014 accuse threaten peace obstruct yemen political process subject global travel ban asset freeze government source tell reuters russian team arrive approval saudi-led arab alliance reveal precise nature surgery saleh rule yemen 34 years force power pro-democracy protest 2012. form surprise alliance houthi movement seize sanaa 2014 saleh army loyalists houthi fighters weather thousands air strike saudi-led military coalition two years war yemen 's ex-president saleh stable russian medics operate