No one needs to make an investment. The playbook—as all countries are figuring it out—to navigate the crisis is simple: agree in principle to the demands, let the narcissistic toddler self-pat, brag about how fantastic of a deal maker he is. Stall, delay to make things official. Let it all die down slowly. Need more time? How about blatant corruption like approving Trump Towers, or gifting a corporate jet? Or make a token investment, just enough to let him brag again.
What every country is doing is buying time. Just enough till the next election or (hopefully) sooner.