Just to be clear we are talking about several different kinds of insurance general here.I don't know the specific country rules for the countries you mentioned but:

1. A majority of country require the driver of a foreign registered vehicle to have THIRD PARTY COMPREHENSIVE which may cover life only (e.g. Australia) or life and property (e.g. Thailand - I think but don't quote me).

This insurance protects the victim's expenses when YOU are fault. It offers you nothing (except a headache) and in numerous countries you'll have to pay the damage in cash to hospital, morgue, or panelbeater/mechanic before you'll be leaving the country and then be trying to get it recouped from the LOCAL insurance company which send you all the documents to claim in their local language.

There is an exception in some first world travellers insurance (google the major names or click on links to their sponsorship of the site) who will case manage your liability. Basically 'public liability insurance - life or property sometimes one or other other or sometimes both. Make sure you know this policy inside and out even if you are compelled to buy a local policy don't resent the doubling up. Because the local one may not be worth squat and you could be held until god knows what funery expenses get dealt with.

2. The second is theft, and damage property to your own vehicle whether at fault or not. To my knowledge there are no insurers anywhere that offer multi-country insurance for your $50,000 R 1250 GSA Triple Black once it's out of the jurisdiction it is registered in. Of course, confederated states as in Australia and the US and I guess Schengen states in Europe offer multi-jurisdiction projection for vehicles legaly registered in a confederacy of states with complementary policies. Crash a NSW registered bike in Queensland you cn be comprehensive theft insurance. But not if that bikes is visiting from Belgium under a Carnet. Whereas if the Belgian bike crashed or was nicked in France your normal Compreensive policy probably has it covered Europe wide.

If your bike is stolen written off or expensively damaged and you know the registration of the culprit in a third country then you stand a chance of recouping your loss via that third country's compulsory third party policy they may made yo buy on entry. Presuming he's paid his premium that is. I've hear stories about riders of $50,000 bikes making friends with young men with little income and a shit box two-stroke (unrelated to any crash) making a deal on creaming the insurance for the crash that only they witnessed. You'd find Aussies willing to help you out like that. You don't even need bike-to-bike contact, he's just got to be at full forcing you off the ride (not that semi trailer driving with it's lights off at night).

FYI: the purely type 1 third party (medical) insurance for my Australian 2023 R1250 GSA Triple black costs AUD $720 per year.

__________________
Malo periculosam libertatem quam quietam servitutem