对这一弱点心知肚明的俄罗斯向叙利亚提供了更先进的S-300导弹；但没有证据表明这些导弹已经运抵叙利亚，更不用说完成部署了。
Mindful of this weakness, Russia has offered Syria its more modern S-300 missiles; but there is no evidence that they have arrived, let alone been deployed.