This from Reuters for me highlights how difficult the search is as countrues don't want to to share radar data. Highlights their weaknesses.
'Asked how important military tracking data would be to resolving the mystery, Hishammuddin said, "It is very important. But in the case of Malaysia, we have actually put aside national security, national interest to get to where we are today."
A senior diplomat in the region said military and government leaders were studying Malaysia's request, but there was no word so far on whether any data would be exchanged.
Malaysia says it will have to buy a new radar system after revealing what it knew of the path the airliner took after turning back across its territory.
"It looks like the ball is in (others') court now and they need to decide what sort of military and other data they are willing to share with us," a Malaysian government source said.
Analysts say it will be difficult to persuade others to do the same, especially if the result would be to reveal weakness in their own defences given the numerous maritime and territorial boundary disputes going on in the region.
"Information and intelligence exchange is very sensitive in this part of the world where there is a lot of distrust and sovereign issues," said Ian Storey, a senior fellow at Singapore's Institute of Southeast Asian Studies.
"Countries are unwilling to share sensitive intelligence because if reveals their military capabilities - or lack of capabilities."'
uk.mobile.reuters.com/article/idUKBREA2701C20140319?irpc=932