[Justa]

"Well, their moron leader Strelkov was apparently crowing about downing an AN26 just minutes before the news of the 777 came out

This is an AN-26

Length: 78 ft 1 in.
Wingspan: 95 ft 9½ in.
Tail height: alt=28 ft 1½.

This is a 777

Length: 209 ft 1 in (63.7 m)
Wingspan: 199 ft 11 in (60.9 m)
Tail height: 60 ft 9 in (18.5 m)

[NorthMountain]

at 35,000ft ... they look alike.

Except that the AN-26 has a service ceiling <25,000 ft.