Question of what now for Syria remains as vexed as ever

While diplomatic efforts continue over Ukraine, Syria risks becoming entrenched as the conflict that was

Before Ukraine there was Syria, a war so vicious and consuming that it was once considered to be the most consequential conflict of the last 50 years.

With more than half a million killed when the counting stopped seven years ago, nearly two-thirds of the country's prewar population displaced or in exile, and its economy and social fabric in ruins, Syria is a shattered husk, its spoils eagerly eyed by the three leaders who gathered in Tehran on Tuesday.