[dignati]

> That said, for all I know the white helmets is a front for ISIS

Never heard of this. Do you have a source?

[berntb]

Look up the English expression "for all I know".

I might as well have written ""for all I know the white helmets might be working for the lizard men."

Disclaimer: English is not my first language so for all I know, I might be misusing the expression. :-)