US President Donald Trump has welcomed Chinese President Xi Jinping to his Florida resort for their first summit.
Mr Trump said the two men had "developed a friendship" as they sat for dinner at his Mar-a-Lago retreat.
The US has carried out a missile strike against a Syrian air base in response to a suspected chemical weapons attack on a rebel-held town.
Fifty-nine Tomahawk cruise missiles were fired from two US Navy ships in the Mediterranean. President Donald Trump said they hit the Shayrat base that launched Tuesday's attack.
US President Donald Trump has condemned the killing of dozens of civilians in northern Syria in an apparent chemical weapons attack by Syria's air force.
It was an "affront to humanity", he said, adding: "When you kill innocent children, innocent babies, little babies... that crosses... many lines."