Despite holding a low opinion of the US president and his negotiators, most Ukrainians have favorable views toward Americans more generally.

A strong deal would build in real penalties for going back to war: automatic, reversible costs that fall on anyone who restarts the fighting.

President Donald Trump has talked of a potential role for Syrian forces in fighting Hezbollah – a move that would raise alarm in Lebanon.

Both countries seem tired of the costs of war and ongoing risks, but successful negotiations will have to overcome deep distrust by both sides.