Boeing, USAF Lower Security Requirements For New Air Force One | Aviation Week Network

https://aviationweek.com/defense/aircraft-propulsion/boeing-usaf-lower-security-requirements-new-air-force-one 

​It Seems russians Failed with Their LMS-901 Baikal and Turn to Remotorization of An-2 Aircraft | Defense Express

Russians estimated that to set engines of the An-28 aircraft on the An-2 would be cheaper than continue designe of the LMS-901 Baikal utility aircraft

https://en.defence-ua.com/weapon_and_tech/it_seems_russians_failed_with_their_lms_901_baikal_and_turn_to_remotorization_of_an_2_aircraft-13625.html