Which of the following top-20-GDP countries will be next to have an acting head of state assassinated?

Prediction market on manifold. Listed are the countries with the twenty largest nominal GDPs as of Dec 18th, 2022. "Constitutional monarchs" and other nominal heads of states do not count; the person has to hold the most politically powerful position in that country. I will decide which political position this is in the comment section if prompted and add it to the description; for most countries it should be obvious. Close date updated to 2050-01-01 12:00 am

Liquidity: $1,160. Resolves: 1/1/2050.