Someone was probably chopping onions.

I see a man during an emotional moment. No one but the pres will know the true reason behind the tears. It could be that he feels sadness over the death of a brave young Marine or could be simply be like crying at the end of a sad movie. Or it could have just been a good photo op.

I see both things but looking into his eyes it appears that the tears are for something else something bigger. Just my perception.

I see someone who is mentally ill...someone with psychotic delusions...I see evil.
BYA. (because you asked).