moscow russia suspend diplomatic presence yemen staff leave country due situation capital sanaa ria news agency cite russian foreign ministry spokeswoman maria zakharova say tuesday russian ambassador yemen diplomatic staff work temporarily saudi capital riyadh interfax news agency cite ministry say yemen conflict pit houthi movement saudi-led military alliance back government base south unleash unite nations call world bad humanitarian crisis russian plane evacuate embassy staff russian nationals sanaa early tuesday saudi state news agency spa say cite saudi-led military coalition fight houthi movement control yemeni capital agency quote official source coalition say receive request permission russian plane evacuate personnel plane leave sanaa airport russia suspend diplomatic presence yemen move envoy riyadh agencies