Oman :

A-50U in Syria ??

https://twitter.com/SyrianMilitary/status/858677896239513601

SM-92 with Italian and Malta roundels (post war) :

Congo Brazzaville (marxist roundels) :

Looks like a Su-30MKM, albeit in a Sukhoi in house livery (pre-production prototype, is my guess).

In that case, that’s the MAW-300 by SAAB.

For the Malaysian deal, Irkut was the main contractor, but canards, stabilizers and fins were manufactured by India’s HAL Nasik under a $25-30 million value subcontract, and India plays a role in helping the RMAF to maintain their fleet. The main difference between the MKI and MKM versions is the replacement of Indian and Israeli avionics, ECM (electronic counter-measures), and LITENING pods with Russian, French and South African equipment. This includes original Russian equipment, Thales of France’s HUD, NAVFLIR, and Damocles surveillance and targeting pod; Avitronics South Africa missile approach warning sensors and laser warning sensors. India’s SU-30MKI Mk3 is also be equipped with an on-board mechanical health-and-usage monitoring system (HUMS) from South Africa’s Aerospace Monitoring And Systems (Pty) Ltd (AMS), but there is no announced word on whether the Malaysian SU-30MKMs are equipped with a similar system

http://www.defenseindustrydaily.com/malaysia-receives-first-2-su30mkms-03336/

Thanks for quick answers gentlemen.