OSCE says experts unable to search crash site due to fighting nearby

The transcript describes a mission to a crash site in Ukraine, detailing the journey from Donetsk to Debaltseve with a convoy of experts and police. Due to security concerns, the team could not access the intended field but conducted a search in a nearby area for human remains and personal belongings. The OSCE monitoring mission, invited by the Ukrainian government, has been active in the region since March and continues its work across Ukraine.

Since when has the OSCE monitoring mission been in Ukraine?

What is the OSCE's commitment in the Donetsk region?