A theory has been advanced for what is called “Disaster Diplomacy

A theory has been advanced for what is called “Disaster Diplomacy.”  Its premise is that international disaster response can be a form of diplomacy.  Its primary feature is that disaster aid can serve to overcome political differences and create an atmosphere of cooperation between countries that previously were adamantly opposed on most issues.  Do you feel this is a realistic concept?  Or is it idealistic wishful thinking that, at best, produces only temporary, transitory benefits?