You are correct...the drought there led to poor harvests of food...usually that's no problem, because they buy what they needed from the US and elsewhere. However, the food riots started because the price of food from the US had risen significantly...because there was less food on the market from the US...because a large part of food crops in the US had been diverted into the production of ETHANOL.
So, you could say climate change led to the riots and ultimately the Arab Spring, but not in the way we are being told. One of the fake solutions to the climate change hoax--biofuels--is what led to the food shortages and high prices.
It's absolutely true that ethanol kills...even the UN agrees...
Biofuels do more harm than good, UN warns