## Solution for a long-standing conjecture of Thomassen

A classical theorem of Nash-Williams implies that every $2k$-edge-connected graph has a $k$-arc-connected orientation. In 1985, Thomassen asked whether a similar statement is true for vertex-connectivity, and formulated a conjecture stating that for every positive integer $k$ there exists a smallest integer $f(k)$ such that every $f(k)$-connected graph has a $k$-connected orientation. In a recent…