And what about what – and who – comes next in Syria?
There has been plenty of talk in the last few days about Hayat Tahrir-al Sham, or HTS.
The British government labels them a proscribed terrorist organisation.
The United States and the European Union attach their own labels which amount to broadly the same thing.
Being proscribed means it is a criminal offence for people to promote, support or be a member of the organisation.
And in practical terms it means the government can’t have a conventional diplomatic relationship with it.
That is one thing, when it is an organisation it doesn’t want to have anything to do with, quite another if it ends up being the recognised government of a country.
So how soon could HTS be de-proscribed?
Cabinet Office Minister Pat McFadden, one of the most senior figures in the government, told the BBC there could be a “relatively swift decision” on whether to talk to HTS.
But fast forward a few hours and both the foreign secretary and the prime minister were emphasising a much slower pace, saying – in line with the message from the White House – that HTS would be judged on its actions, with the implication this could take time and would not be rushed.
Lammy said it was right to be “cautious”.
Sir Keir Starmer said “no decision is pending at all.”
So much has changed so quickly in Syria, with multiple implications and posing difficult decisions – and there will be plenty more to come.