Unclear if presidents will have anything to sign; Mark Rutte urges Nato to pour out their air defence stockpiles for Ukraine. What we know on day 1,429

Voldymyr Zelenskyy was reported on Wednesday evening to be bound for Davos after Donald Trump appeared to summon him to the World Economic Forum. The Ukrainian president had said a day earlier that he did not expect to attend the conference in Switzerland as Russian attacks had plunged Ukraine into an energy crisis: “Undoubtedly, I choose Ukraine in this case, rather than the economic forum, but everything can change at any moment.”

Trump’s announcement of the meeting appeared to be at short notice, since he said it would take place on Wednesday, when his Ukrainian counterpart was not even in the same country. After Trump spoke, officials clarified that their meeting would be on Thursday. Zelenskyy previously said: “Meetings with America should always end with concrete results to strengthen Ukraine or to move closer to ending the war. And if the documents are ready, we will meet.” Talks between senior Ukrainian representatives and Trump’s envoys have been continuing since Saturday, including in Davos, but late on Wednesday it was unclear whether there would be any documents to sign.