 In November 2018 Lajcak lambasted as “anti-democratic” the proposed Kosovo/Serbia land swap and cautioned against the regional repercussions of such a proposal.In the same month, Slovakia abstained on Kosovo's membership in Interpol.Since 2019, Lajčák has been serving on the Transatlantic Task Force of the German Marshall Fund and the Bundeskanzler-Helmut-Schmidt-Stiftung (BKHS), co-chaired by Karen Donfried and Wolfgang Ischinger.