Here is more about Kirgiz TU-154 part of the wing loss:
AMC releases KC-135 accident investigation results
...The KC-135 was struck by a host nation TU-154 that was taking off. The TU-154's right wing struck the fairing of the KC-135's No. 1 engine. The force of the impact nearly severed the No. 1 engine from KC-135 and destroyed a portion of the aircraft's left wing. The TU-154 lost approximately six feet of its right wingtip, but was able to get airborne and return to the airport for an emergency landing with no additional damage to the aircraft.