In Vietnam, they do not consider the Russian S-400 effective against the F-35.

The Vietnamese media attacked Russia with serious criticism regarding the effectiveness of the Russian Triumph S-400 air defense systems. According to the journalists of the Vietnamese publication "Dat Viet", the Russian military had enough time to demonstrate the fact of the discovery of F-35 fighters, while the latter were in the detection zone of radar equipment, however, now, obviously, it should be assumed that it is the Russian S -400 should be wary of the American F-35.

“According to a military source in the US, there is no reason for the F-35 to be afraid of Russian air defense systems, especially the S-400 system deployed in Syria. This is indicated by the fact that the F-35 continues to operate near Syria, despite the S-400, and perhaps the S-400 is worth the fear of the capabilities of the F-35. On several occasions when Russia and China claimed that their radar captured the F-35 while operating at a distance equivalent to a fourth-generation fighter, the United States took a deliberate act to conceal the true capabilities of the stealth aircraft. This is due to the fact that often the F-35 while in normal flight always carry equipment that increases their radar visibility. In this case, the “stealth” 5th generation fighter is no different from the 4th generation fighter. But when it comes to combat, when the F-35 flies at low altitude, things are completely different, as the F-35I Adir airstrikes have already demonstrated. The implementation of attacks on Syrian territory did not meet any reaction from either Syrian or Russian air defense ”- сообщает Dat Viet Edition.

Noteworthy is the fact. that Vietnam was previously considered one of the possible buyers of the Russian S-400, however, it was later abandoned by them, which does not exclude the possibility that Vietnam really doubts the high capabilities of the Russian air defense / missile defense systems such as the S-400 Triumph.