@Brumby
Yes, if you think about it, China's actions in the SCS should end up as a overall net positive for the world. I measure this by the end result which will be apparent in a few years which includes
1. The additional infrastructure for civilian use. eg. lighthouses to prevent shipwrecks, airborne surveillance which would have prevented/solved cases like the Malaysian Airlines mystery, eventually joint anti-piracy patrols/facilities etc
2. China will be more secure in investing in infrastructure development and maritime commerce, as it will have greater security that its trillions in investments and trade will be protected. Chinese funding/construction/ownership of infrastructure development could address much of the developing world's needs and boost their efforts to eliminate poverty. This far outweighs the benefits that Filipino fishermen derive.
Hence a net positive for the world.
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FON is ambiguous enough that there are different interpretations of UNCLOS. In my view, I think China should take the long-view, because it is likely that China will end up with the world's largest navy, and therefore military FON through EEZs is ultimately in China's interest.
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But we can see that at the nation-state level, the US disregards the same international laws that it champions as lawful rule. It's just rank hypocrisy like every other country in the world.
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Let's look at some countries that are neutral or support China in the SCS.
Russia - they don't have any interest in the SCS, but they do find it very useful as it distracts the US from their quasi-conflict with Russia.
Central Asia - They're landlocked countries that really don't care what happens in the SCS and they're part of the land-based silk road route which terminates at ports in the Pakistan ports. China securing the sea-based Silk-road route to these ports is in their interests.
Africa - They're part of the sea based silk road, and count China as their largest trading partner. China securing the sea-based Silk-road route to these ports is in their interests
The same calculation applies to other countries like Cambodia, Thailand, etc. They do not have any territorial disputes with China and know that the Chinese military will always keep the commercial trade routes open.
Flag follows trade, as the British Empire once put it