WHBM
Most of the former CIS states have converted to feet (Lativa for example). Last time I flew to Kiev (Ukraine) they used feet down to about FL040 then metres for the final approach. I suspect that in a couple of years or so they could well be totally converted.
Having said that, and despite being brought in using imperial units, it is a bit anachronistic is the 21st century with us using a mixture of knots for windspeed, metres for visibility, feet for altitude, and millibars [hectopascals] for pressure.
In this I exclude the US of A, who if nothing else are at least consistent [in being behind the times]!