What makes AKLNG the most risky is that this project requires the sovereign not to just support the endeavor (with loans, limited funding, grants of access, tax incentives, etc) but to actually become an equity partner in the enterprise itself with an open ended liability.   I don't think any of these other projects in the "pipeline graveyard" had this dangerous parameter as does AKLNG.  

Of course many of these projects (certainly AGIA, Denali, and AKLNG) are another variant of the ruse used  by the governments and their supporters when they find themselves on the losing side in war .  They then attempt to bolster the morale of the people (and to delude themselves) by promising a new "wonder weapon" that will turn the tide.  Sorry, but the tide is very hard to hold back and impossible to reverse.