Coffee Leaf Rust $-$ Geopolitical Risk to Starbucks $-$ How prevalent the fungus is right now, how fast it tends to grow once it is found in a given region $($i$.$e$.,$ how many months it would take to have a large impact on productivity of that region$),$ how easily it spreads from region to region $($i$.$e$,$ from country to country$),$ how much effort is required to fight it once identified? How to mitigate the coffee leaf rust? Discuss pros and cons of all of your proposed strategies.