It is unclear whether ddt does cause these issues but current evidence raises concerns.
It is unclear what impact the government's action plan will have on venture capital and innovation.
Macy's is very unclear about where it wants to go, what kind of brand image it wants to project.
It's unclear what's going to happen on the battlefield before the ceasefire, they could try to close the ring around aleppo.
What's unclear is the economy.
At this point it's unclear what caused the disaster.
It's unclear whether there's sufficient market to maintain two companies.
