Belgian Prime Minister Charles Michel, French President Emmanuel Macron, Luxembourg's Prime Minister Xavier Bettel and Dutch Prime Minister Mark Rutte (from L to R) attend a meeting in Bourglinster, Luxembourg, on Sept. 6, 2018. Luxembourg's Prime Minister Xavier Bettel hosted the Belgian, Dutch and French leaders for a working lunch on Thursday, during which they discussed, among other things, the future of Europe. (Xinhua/SIP/Jean-Christophe Verhaegen)