This happened one week ago and it has already dropped from public consciousness in the US, and Obama has never had to explain anything.
The regime moved very quickly and actually shut down the US press over the weekend by announcing that they would not answer any more questions about it because it was an ongoing criminal (!) investigation.
This is part of their strategy of treating terrorism and even quasi-military foreign attacks as just isolated crimes and not connected to politics or ideology, in order to minimize their significance.
And the strategy of declaring it off-limits because of the FBI investigation has silenced even those members of the US press who might have wanted to pursue it.
This happened one week ago and it has already dropped from public consciousness in the US, and Obama has never had to explain anything.
C’mon now, there are priorities. He had a lot on his plate. He had to go to Vegas to compare his supporters to the murdered Ambassador. And then he had that important interview with the Pimp With A Limp.