Trump is letting the Russians and Syria know ahead of time. If Assad uses chemical weapons then Russia will know ahead of time and their will be no excuses.
their = there
I don’t think that Assad used them in April and I don’t believe he is planning to use them now.
President Trump is being fed information by people who want conflict with Russia and are driving the US towards such a fight.
The opposition to Assad that spiraled out of control into the Islamic State were jihadists backed by Saudi Arabia, Qatar and the Gulf Arab states.
These “Osama Bin Laden sympathizers” continue their fight against Assad in organizations like Jabhat al-Nusra at this moment.
The USA should not be on the side of the Al-Qaeda groups fighting Assad.