RCA temporary local INSURANCE for motorbike
 

hello guys, I'm planning to go for a long trip from Italy to Vietnam, I'm collecting informations about everithing but I can't find about Insurance. After Iran my insurance is not working anymore and I red that is mandatory to have a local one in Pakistan, India, and SEA countries...
then "How do I get them?", on the border?
How much do they cost?
and is there an insurance valid for more than one countries (pakistan and India or Thailandia-cambogia.laos vietnam)?

thank you for any informations!!