I think you are right about the drought but wrong about mass starvation anywhere except africa.
In the US, we waste about 20 percent of our food anyway and we can also grow more by using our back yards for gardens.
We also waste a ton of water. And we can fish farm with algea providing the feed stock.
And if a few hundred million in africa can not afford food, their dying off will balance the equation.
There was a major drought on the East Coast that occurred roughly from the time Walter Raleigh sailed away to the day John Smith and his band of happy campers settled Jamestown.
It was constant, unrelenting, bone dry drought.
It was so bad the water ABOVE the Fall Line was salty. That hasn't happened since. I suspect it will happen this year. We are short half a dozen hurricanes.