The West, and Poland, in particular, is behind protests against deeper Belarus-Russia integration in Minsk. Poland has been investing in the infrastructure for protests in Belarus for years and takes it on the street when it wishes.
The passenger plane with 168 passengers could accidentally end up on the same course with the US drone MQ-9 Reaper, which has the ability to loop at maximum height. The plane was probably endangered by the US drone and could accidentally become a target of the Iranian missile.
The collision of the plane with a US drone is a very convincing version.
Conspiracy theory about the downing of the Ukrainian flight PS 752. No evidence given about the presence of a US drone in the crash area.
Iran has recognised that its military forces unintentionally shot down the passenger jet. On January 11, the President of the Islamic Republic of Iran Hassan Rouhani wrote on Twitter: “Armed Forces’ internal investigation has concluded that regrettably, missiles fired due to human error caused the horrific crash of the Ukrainian plane & death of 176 innocent people.”
Find here the EU statement regarding the incident.