The Friend or Foe system is immaterial if you are running a false flag operation. All you need is a US fighter aircraft painted in Russian colors conducting low flying bombing raids on civilians (with some pretty pictures to match). The Russians can complain all they like that they didn’t do it but the Western media will publish the false claims against them.

it is completely useless, and US should understand that – since the Identification, Friend or Foe System (IFF) System is working… 😉

Maybe. I really don’t believe the fairy story of Obama-the-isolated-good-guy. Rather this fairy tale of warring internal factions is handy cover for wriggling out of US cock-ups in the same way that every brutal bombing of civilians (or recently Syrian army soldiers during a ceasefire) is mea culpa an “accident”.
In fact it was immediately clear to the ROW that the Sarin attacks were a foreign sabotage designed to exactly (and far too obviously) cross Obama’s random red line and thus provide an R2P excuse for USA/NATO/ to openly declare war on Syria on behalf of Greater Israel. It was eminently obvious to non-Americans (i.e. ROW) that Assad would NOT gas his own people – especially children!! – and especially not at the same moment that the chemical weapons inspectors’ plane touching down in Damascus.
So this act of sabotage and war crime didn’t fly: it was clear that it was the work of the Americans. And the no vote of the UK parliament was the clincher. And so Washington cut its losses. Enter Obama-the-good and the “warring factions”…

I doubt that Obama will want to vacate the White House having caused military conflict with Russia. His replacement – Clinton, for example – might be another story.
Obama didn’t do this on his own. He had all kinds of advocates — the State Department, CIA, The Pentagon, neocons and Israel backers, Middle East countries like Saudi Arabia and Turkey, John McCain, the Republicans and the National Endowment of Democracy — all promoting the idea.
When the 2013 Ghouta sarin gas attacks happened all of these groups were pressing Obama to send in US forces — that Assad had “crossed the red line” of chemical weapons usage. Obama didn’t want to do it but was being pressured to do so. Only an adroit move by Putin saved his bacon. Putin offered to get Assad to give up all his chemical weapons, which he did. (Btw, al Nusra did the sarin attacks, not Assad).
Please be clear about this. Hillary Clinton was a major driver of increased US involvement. She more than anybody was pushing the idea of no-fly zones and other confrontational strategies. As President you can expect from her a major US-Russia conflict over Syria.

On October 5, a strategic meeting of the so-called Principals Committee (tantamount to a War Cabinet) met behind closed doors at the White House. In attendance: senior officials (Secretary level) from the Pentagon, CIA, Joint Chiefs of Staff, State Department and top national security advisors of the White House.
On the agenda: a proposal earlier voiced by the US state Department to directly attack Syrian government forces and military facilities, inevitably implying the possibility of direct military confrontation with Russia as well as a process of escalation.

http://www.globalresearch.ca/air-strikes-against-syria-who-are-the-war-criminals-who-is-supporting-al-qaeda-russia-or-america/5548799
Looks like the Americans are gearing up for military confrontation.